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refactor(curriculum): update higher order function workshop to break down steps further (#60435)
Co-authored-by: Kolade Chris <65571316+Ksound22@users.noreply.github.com>
This commit is contained in:
Jessica Wilkins
GitHub
parent
e2ec2c14b4
commit
4f0cd7aee3
@ -20,24 +20,64 @@
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"title": "Step 3"
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},
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{
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"id": "67116d7584d0b469b14579c1",
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"id": "681dbe48ee5df6842385d735",
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"title": "Step 4"
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},
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{
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"id": "67116d7584d0b469b14579c2",
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"id": "681dc1bbbf0d2e85ac499cf6",
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"title": "Step 5"
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},
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{
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"id": "67116d7584d0b469b14579c3",
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"id": "681dc623b2b18887266777b1",
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"title": "Step 6"
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},
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{
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"id": "67116d7584d0b469b14579c4",
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"id": "6822576638d15cff700f091d",
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"title": "Step 7"
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},
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{
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"id": "67190ce4fe18911edc2018d2",
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"id": "6822595203b35c00b87c0524",
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"title": "Step 8"
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},
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{
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"id": "68225ea2f1aae301fa4df0f4",
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"title": "Step 9"
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},
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{
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"id": "682264d807fe00058c1ea013",
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"title": "Step 10"
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},
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{
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"id": "67116d7584d0b469b14579c2",
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"title": "Step 11"
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},
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{
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"id": "6822694e3d34c807feeaba50",
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"title": "Step 12"
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},
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{
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"id": "68226c92f138dd09cd5b9722",
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"title": "Step 13"
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},
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{
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"id": "67116d7584d0b469b14579c3",
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"title": "Step 14"
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},
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{
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"id": "682277e2d3a05f0c5cf34d19",
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"title": "Step 15"
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},
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{
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"id": "6827deed7fc01f074c90fc0d",
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"title": "Step 16"
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},
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{
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"id": "6827e10547fdd308bca1c73d",
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"title": "Step 17"
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},
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{
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"id": "67116d7584d0b469b14579c4",
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"title": "Step 18"
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}
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],
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"helpCategory": "JavaScript",
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@ -1,40 +1,36 @@
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---
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id: 67116d7584d0b469b14579c2
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title: Step 5
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title: Step 11
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challengeType: 1
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dashedName: step-5
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dashedName: step-11
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---
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# --description--
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To display the book summaries, you can use the `about` property of each book.
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To get a list of book summaries, you can use the `about` property of each book.
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Create a `getBookSummaries` function with a single parameter, accepting an array with book objects. The `getBookSummaries` function should return an array containing all the `about` property value of each book.
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Create a `getBookSummaries` function with a single parameter, accepting an array with book objects. You can name the parameter whatever you like.
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The `getBookSummaries` function should return an array of strings representing the summary for each book.
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# --hints--
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You should create a `getBookSummaries` function.
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```js
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assert.isFunction(getBookSummaries)
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assert.isFunction(getBookSummaries);
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```
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Your `getBookSummaries` function should have one parameter.
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```js
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assert.lengthOf(getBookSummaries, 1)
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assert.lengthOf(getBookSummaries, 1);
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```
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Your `getBookSummaries` function should return an array.
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```js
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assert.isArray(getBookSummaries(library))
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```
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Your `getBookSummaries` function should use a higher order function. Ex. (`filter`, `map`, `reduce`).
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```js
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assert.match(getBookSummaries.toString(), /filter|map|reduce|forEach/);
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assert.isArray(getBookSummaries(library));
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```
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Your `getBookSummaries` function should return an array with the same length as the array passed to it.
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@ -150,16 +146,16 @@ const library = [
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},
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];
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function displayBooks(catalog) {
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let output = 'Books in the Library:\n';
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console.log("Books in the Library:\n");
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catalog.forEach((book) => {
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output += `- ${book.title} by ${book.author} (${book.pages} pages)\n`;
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});
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return output;
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function getBookInformation(catalog) {
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return catalog.map(book => `${book.title} by ${book.author}`).join("\n");
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}
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console.log(getBookInformation(library));
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console.log("\nList of book summaries:\n");
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--fcc-editable-region--
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--fcc-editable-region--
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@ -1,13 +1,34 @@
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---
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id: 67116d7584d0b469b14579c3
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title: Step 6
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title: Step 14
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challengeType: 1
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dashedName: step-6
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dashedName: step-14
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---
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# --description--
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Another useful thing to do is to get the books by their author.
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In earlier lectures, you learned how to work with the `filter()` method which is used to return a new array of filtered results.
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Here is an example:
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```js
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const developers = [
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{ name: "Alice", city: "New York", age: 30 },
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{ name: "Bob", city: "San Francisco", age: 25 },
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{ name: "Charlie", city: "New York", age: 35 },
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{ name: "Diana", city: "Chicago", age: 28 }
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];
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const newYorkCityDevelopers = developers.filter(dev => dev.city === "New York");
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console.log(newYorkCityDevelopers);
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/*
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[
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{ name: "Alice", city: "New York", age: 30 },
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{ name: "Charlie", city: "New York", age: 35 }
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]
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*/
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```
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Create a `getBooksByAuthor` function with two parameters - an array with book objects and a string with the author.
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@ -18,13 +39,13 @@ The function must return an array that contains the books by a particular author
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You should create a `getBooksByAuthor` function.
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```js
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assert.isFunction(getBooksByAuthor)
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assert.isFunction(getBooksByAuthor);
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```
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Your `getBooksByAuthor` function should have two parameters.
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```js
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assert.lengthOf(getBooksByAuthor, 2)
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assert.lengthOf(getBooksByAuthor, 2);
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```
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Your `getBooksByAuthor` function should return an array.
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@ -33,12 +54,6 @@ Your `getBooksByAuthor` function should return an array.
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assert.isArray(getBooksByAuthor(library, ''));
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```
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Your `getBooksByAuthor` function should use a higher order function. Ex. (`filter`, `map`, `reduce`).
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```js
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assert.match(getBooksByAuthor.toString(), /filter|map|reduce|forEach/);
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```
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Your `getBooksByAuthor` function should return the correct number of books for any of the authors.
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```js
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@ -139,20 +154,24 @@ const library = [
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},
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];
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function displayBooks(catalog) {
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let output = 'Books in the Library:\n';
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console.log("Books in the Library:\n");
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catalog.forEach((book) => {
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output += `- ${book.title} by ${book.author} (${book.pages} pages)\n`;
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});
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return output;
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function getBookInformation(catalog) {
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return catalog.map(book => `${book.title} by ${book.author}`).join("\n");
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}
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console.log(getBookInformation(library));
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console.log("\nList of book summaries:\n");
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function getBookSummaries(catalog) {
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return catalog.map((book) => book.about);
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return catalog.map((book) => book.about).join("\n");
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}
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console.log(getBookSummaries(library));
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console.log("\nList of books by Arvid Kahl:\n");
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--fcc-editable-region--
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--fcc-editable-region--
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@ -1,33 +1,49 @@
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---
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id: 67116d7584d0b469b14579c4
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title: Step 7
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title: Step 18
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challengeType: 1
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dashedName: step-7
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dashedName: step-18
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---
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# --description--
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Finally, create a `getTotalPages` function with a single parameter, accepting an array with book objects. The function should return the total number of pages in the books from the array passed to the function.
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For the last step of the workshop, you will review how to work with the `reduce()` method. This method is used to process an array and condense it into a single value.
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Here is an example:
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```js
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const numbers = [1, 2, 3, 4, 5];
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const sum = numbers.reduce((acc, curr) => acc + curr, 0);
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console.log(sum); // 15
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```
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In the following example, the reducer function takes `acc` (which starts at 0, as specified by the second argument to `reduce`) and adds each number to it. This will return a sum of `15`.
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Create a `getTotalPages` function with a single parameter, accepting an array with book objects. The function should return the total number of pages in the books from the array passed to the function.
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Lastly, add a `console.log(getTotalPages(library))` below your `getTotalPages` function to see the result.
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With that, your library manager workshop is complete!
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# --hints--
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You should create a `getTotalPages` function.
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```js
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assert.isFunction(getTotalPages)
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assert.isFunction(getTotalPages);
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```
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Your `getTotalPages` function should have one parameter.
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```js
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assert.lengthOf(getTotalPages, 1)
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assert.lengthOf(getTotalPages, 1);
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```
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Your `getTotalPages` function should return a number.
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```js
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assert.isNumber(getTotalPages(library))
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assert.isNumber(getTotalPages(library));
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```
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Your `getTotalPages` function should return the total number of pages in the books from the array passed to it.
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@ -58,10 +74,10 @@ const _differentLibrary = [
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assert.strictEqual(getTotalPages(_differentLibrary), 944);
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```
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Your `getTotalPages` function should use a higher order function. Ex. (`filter`, `map`, `reduce`).
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You should have a `console.log(getTotalPages(library))`.
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```js
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assert.match(getTotalPages.toString(), /filter|map|reduce|forEach/);
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assert.match(code, /console\.log\(\s*getTotalPages\(\s*library\)\s*\);?/);
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```
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# --seed--
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@ -121,26 +137,127 @@ const library = [
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},
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];
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function displayBooks(catalog) {
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let output = 'Books in the Library:\n';
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console.log("Books in the Library:\n");
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catalog.forEach((book) => {
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output += `- ${book.title} by ${book.author} (${book.pages} pages)\n`;
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});
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return output;
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function getBookInformation(catalog) {
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return catalog.map(book => `${book.title} by ${book.author}`).join("\n");
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}
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console.log(getBookInformation(library));
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console.log("\nList of book summaries:\n");
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function getBookSummaries(catalog) {
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return catalog.map((book) => book.about);
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return catalog.map((book) => book.about).join("\n");
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}
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console.log(getBookSummaries(library));
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console.log("\nList of books by Arvid Kahl:\n");
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function getBooksByAuthor(catalog, author) {
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return catalog.filter((book) => book.author === author);
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}
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console.log(getBooksByAuthor(library, "Arvid Kahl"));
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console.log("\nList of books by James Clear:\n");
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console.log(getBooksByAuthor(library, "James Clear"));
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console.log("\nTotal number of pages for all library books:\n");
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--fcc-editable-region--
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--fcc-editable-region--
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```
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# --solutions--
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```js
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const library = [
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{
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title: 'Your Next Five Moves: Master the Art of Business Strategy',
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author: 'Patrick Bet-David and Greg Dinkin',
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about: 'A book on how to plan ahead',
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pages: 320,
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},
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{
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title: 'Atomic Habits',
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author: 'James Clear',
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about: 'A practical book about discarding bad habits and building good ones',
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pages: 320,
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},
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{
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title: 'Choose Your Enemies Wisely: Business Planning for the Audacious Few',
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author: 'Patrick Bet-David',
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about:
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"A book that emphasizes the importance of identifying and understanding one's adversaries to succeed in the business world",
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pages: 304,
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},
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{
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title: 'The Embedded Entrepreneur',
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author: 'Arvid Kahl',
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about: 'A book focusing on how to build an audience-driven business',
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pages: 308,
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},
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{
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title: 'How to Be a Coffee Bean: 111 Life-Changing Ways to Create Positive Change',
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author: 'Jon Gordon',
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about: 'A book about effective ways to lead a coffee bean lifestyle',
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pages: 256,
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},
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{
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title: 'The Creative Mindset: Mastering the Six Skills That Empower Innovation',
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author: 'Jeff DeGraff and Staney DeGraff',
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about: 'A book on how to develop creativity and innovation skills',
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pages: 168,
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},
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{
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title: 'Rich Dad Poor Dad',
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author: 'Robert Kiyosaki and Sharon Lechter',
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about: 'A book about financial literacy, financial independence, and building wealth. ',
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pages: 336,
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},
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{
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title: 'Zero to Sold',
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author: 'Arvid Kahl',
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about: 'A book on how to bootstrap a business',
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pages: 500,
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},
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];
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console.log("Books in the Library:\n");
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function getBookInformation(catalog) {
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return catalog.map(book => `${book.title} by ${book.author}`).join("\n");
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}
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console.log(getBookInformation(library));
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console.log("\nList of book summaries:\n");
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function getBookSummaries(catalog) {
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return catalog.map((book) => book.about).join("\n");
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}
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console.log(getBookSummaries(library));
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console.log("\nList of books by Arvid Kahl:\n");
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function getBooksByAuthor(catalog, author) {
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return catalog.filter((book) => book.author === author);
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}
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console.log(getBooksByAuthor(library, "Arvid Kahl"));
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console.log("\nList of books by James Clear:\n");
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console.log(getBooksByAuthor(library, "James Clear"));
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console.log("\nTotal number of pages for all library books:\n");
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function getTotalPages(catalog) {
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return catalog.reduce((acc, book) => acc + book.pages, 0);
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}
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console.log(getTotalPages(library));
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```
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@ -1,264 +0,0 @@
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---
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id: 67190ce4fe18911edc2018d2
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title: Step 8
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challengeType: 1
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dashedName: step-8
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---
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# --description--
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Now, you should test out the functions by calling them with the appropriate arguments.
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Create four new variables: `libraryBooks`, `bookSummaries`, `booksByArvidKahl`, and `totalPagesOfBooksInLibrary`. Set them all to the calling of `displayBooks()`, `getBookSummaries()`, `getBooksByAuthor()`, and `getTotalPages()` respectively with the appropriate parameters.
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Log all the variables to the console.
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With that, your library manager workshop is complete.
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# --hints--
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You should create a `libraryBooks` variable.
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```js
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assert.isNotNull(libraryBooks)
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```
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Your `libraryBooks` variable should be set to `displayBooks(library)`.
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```js
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assert.equal(libraryBooks, displayBooks(library));
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```
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You should log the `libraryBooks` variable to the console.
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```js
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assert.match(code, /console\.log\(libraryBooks\);?/)
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```
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You should create a `bookSummaries` variable.
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```js
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assert.isNotNull(bookSummaries)
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```
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Your `bookSummaries` variable should be set to `getBookSummaries(library)`.
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```js
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assert.deepEqual(bookSummaries, getBookSummaries(library));
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```
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You should log the `bookSummaries` variable to the console.
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```js
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assert.match(code, /console\.log\(bookSummaries\);?/)
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```
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You should create a `booksByArvidKahl` variable.
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```js
|
||||
assert.isNotNull(booksByArvidKahl)
|
||||
```
|
||||
|
||||
Your `booksByArvidKahl` variable should be set to `getBooksByAuthor(library, 'Arvid Kahl')`.
|
||||
|
||||
```js
|
||||
assert.deepEqual(booksByArvidKahl, getBooksByAuthor(library, 'Arvid Kahl'));
|
||||
```
|
||||
|
||||
You should log the `booksByArvidKahl` variable to the console.
|
||||
|
||||
```js
|
||||
assert.match(code, /console\.log\(booksByArvidKahl\);?/)
|
||||
```
|
||||
|
||||
You should create a `totalPagesOfBooksInLibrary` variable.
|
||||
|
||||
```js
|
||||
assert.isNotNull(totalPagesOfBooksInLibrary)
|
||||
```
|
||||
|
||||
Your `totalPagesOfBooksInLibrary` variable should be set to `getTotalPages(library)`.
|
||||
|
||||
```js
|
||||
assert.deepEqual(totalPagesOfBooksInLibrary, getTotalPages(library));
|
||||
```
|
||||
|
||||
You should log the `totalPagesOfBooksInLibrary` variable to the console.
|
||||
|
||||
```js
|
||||
assert.match(code, /console\.log\(totalPagesOfBooksInLibrary\);?/)
|
||||
```
|
||||
|
||||
# --seed--
|
||||
|
||||
## --seed-contents--
|
||||
|
||||
```js
|
||||
const library = [
|
||||
{
|
||||
title: 'Your Next Five Moves: Master the Art of Business Strategy',
|
||||
author: 'Patrick Bet-David and Greg Dinkin',
|
||||
about: 'A book on how to plan ahead',
|
||||
pages: 320,
|
||||
},
|
||||
{
|
||||
title: 'Atomic Habits',
|
||||
author: 'James Clear',
|
||||
about: 'A practical book about discarding bad habits and building good ones',
|
||||
pages: 320,
|
||||
},
|
||||
{
|
||||
title: 'Choose Your Enemies Wisely: Business Planning for the Audacious Few',
|
||||
author: 'Patrick Bet-David',
|
||||
about:
|
||||
"A book that emphasizes the importance of identifying and understanding one's adversaries to succeed in the business world",
|
||||
pages: 304,
|
||||
},
|
||||
{
|
||||
title: 'The Embedded Entrepreneur',
|
||||
author: 'Arvid Kahl',
|
||||
about: 'A book focusing on how to build an audience-driven business',
|
||||
pages: 308,
|
||||
},
|
||||
{
|
||||
title: 'How to Be a Coffee Bean: 111 Life-Changing Ways to Create Positive Change',
|
||||
author: 'Jon Gordon',
|
||||
about: 'A book about effective ways to lead a coffee bean lifestyle',
|
||||
pages: 256,
|
||||
},
|
||||
{
|
||||
title: 'The Creative Mindset: Mastering the Six Skills That Empower Innovation',
|
||||
author: 'Jeff DeGraff and Staney DeGraff',
|
||||
about: 'A book on how to develop creativity and innovation skills',
|
||||
pages: 168,
|
||||
},
|
||||
{
|
||||
title: 'Rich Dad Poor Dad',
|
||||
author: 'Robert Kiyosaki and Sharon Lechter',
|
||||
about: 'A book about financial literacy, financial independence, and building wealth. ',
|
||||
pages: 336,
|
||||
},
|
||||
{
|
||||
title: 'Zero to Sold',
|
||||
author: 'Arvid Kahl',
|
||||
about: 'A book on how to bootstrap a business',
|
||||
pages: 500,
|
||||
},
|
||||
];
|
||||
|
||||
function displayBooks(catalog) {
|
||||
let output = 'Books in the Library:\n';
|
||||
|
||||
catalog.forEach((book) => {
|
||||
output += `- ${book.title} by ${book.author} (${book.pages} pages)\n`;
|
||||
});
|
||||
|
||||
return output;
|
||||
}
|
||||
|
||||
function getBookSummaries(catalog) {
|
||||
return catalog.map((book) => book.about);
|
||||
}
|
||||
|
||||
function getBooksByAuthor(catalog, author) {
|
||||
return catalog.filter((book) => book.author === author);
|
||||
}
|
||||
|
||||
function getTotalPages(catalog) {
|
||||
return catalog.reduce((acc, book) => acc + book.pages, 0);
|
||||
}
|
||||
|
||||
--fcc-editable-region--
|
||||
|
||||
--fcc-editable-region--
|
||||
```
|
||||
|
||||
# --solutions--
|
||||
|
||||
```js
|
||||
const library = [
|
||||
{
|
||||
title: 'Your Next Five Moves: Master the Art of Business Strategy',
|
||||
author: 'Patrick Bet-David and Greg Dinkin',
|
||||
about: 'A book on how to plan ahead',
|
||||
pages: 320,
|
||||
},
|
||||
{
|
||||
title: 'Atomic Habits',
|
||||
author: 'James Clear',
|
||||
about: 'A practical book about discarding bad habits and building good ones',
|
||||
pages: 320,
|
||||
},
|
||||
{
|
||||
title: 'Choose Your Enemies Wisely: Business Planning for the Audacious Few',
|
||||
author: 'Patrick Bet-David',
|
||||
about:
|
||||
"A book that emphasizes the importance of identifying and understanding one's adversaries to succeed in the business world",
|
||||
pages: 304,
|
||||
},
|
||||
{
|
||||
title: 'The Embedded Entrepreneur',
|
||||
author: 'Arvid Kahl',
|
||||
about: 'A book focusing on how to build an audience-driven business',
|
||||
pages: 308,
|
||||
},
|
||||
{
|
||||
title: 'How to Be a Coffee Bean: 111 Life-Changing Ways to Create Positive Change',
|
||||
author: 'Jon Gordon',
|
||||
about: 'A book about effective ways to lead a coffee bean lifestyle',
|
||||
pages: 256,
|
||||
},
|
||||
{
|
||||
title: 'The Creative Mindset: Mastering the Six Skills That Empower Innovation',
|
||||
author: 'Jeff DeGraff and Staney DeGraff',
|
||||
about: 'A book on how to develop creativity and innovation skills',
|
||||
pages: 168,
|
||||
},
|
||||
{
|
||||
title: 'Rich Dad Poor Dad',
|
||||
author: 'Robert Kiyosaki and Sharon Lechter',
|
||||
about: 'A book about financial literacy, financial independence, and building wealth. ',
|
||||
pages: 336,
|
||||
},
|
||||
{
|
||||
title: 'Zero to Sold',
|
||||
author: 'Arvid Kahl',
|
||||
about: 'A book on how to bootstrap a business',
|
||||
pages: 500,
|
||||
},
|
||||
];
|
||||
|
||||
function displayBooks(catalog) {
|
||||
let output = 'Books in the Library:\n';
|
||||
|
||||
catalog.forEach((book) => {
|
||||
output += `- ${book.title} by ${book.author} (${book.pages} pages)\n`;
|
||||
});
|
||||
|
||||
return output;
|
||||
}
|
||||
|
||||
function getBookSummaries(catalog) {
|
||||
return catalog.map((book) => book.about);
|
||||
}
|
||||
|
||||
function getBooksByAuthor(catalog, author) {
|
||||
return catalog.filter((book) => book.author === author);
|
||||
}
|
||||
|
||||
function getTotalPages(catalog) {
|
||||
return catalog.reduce((acc, book) => acc + book.pages, 0);
|
||||
}
|
||||
|
||||
const bookSummaries = getBookSummaries(library);
|
||||
console.log(bookSummaries);
|
||||
|
||||
const libraryBooks = displayBooks(library);
|
||||
console.log(libraryBooks);
|
||||
|
||||
const booksByArvidKahl = getBooksByAuthor(library, 'Arvid Kahl');
|
||||
console.log(booksByArvidKahl);
|
||||
|
||||
const totalPagesOfBooksInLibrary = getTotalPages(library);
|
||||
console.log(totalPagesOfBooksInLibrary);
|
||||
```
|
||||
@ -0,0 +1,84 @@
|
||||
---
|
||||
id: 681dbe48ee5df6842385d735
|
||||
title: Step 4
|
||||
challengeType: 1
|
||||
dashedName: step-4
|
||||
---
|
||||
|
||||
# --description--
|
||||
|
||||
The rest of the objects representing the books have been filled in for you.
|
||||
|
||||
Now would be a good time to start working on displaying the book information in the console. Over the next few steps, you will learn how to work with the `map()` method to achieve this goal.
|
||||
|
||||
Begin by logging the message `"Books in the Library:\n"` to the console. The newline character is added here because there should be a space between this message and the list of books.
|
||||
|
||||
# --hints--
|
||||
|
||||
You should log the message `"Books in the Library:\n"` to the console.
|
||||
|
||||
```js
|
||||
assert.match(code, /console\.log\(("|')Books\s+in\s+the\s+Library:\\n\1\);?/);
|
||||
```
|
||||
|
||||
# --seed--
|
||||
|
||||
## --seed-contents--
|
||||
|
||||
```js
|
||||
const library = [
|
||||
{
|
||||
title: 'Your Next Five Moves: Master the Art of Business Strategy',
|
||||
author: 'Patrick Bet-David and Greg Dinkin',
|
||||
about: 'A book on how to plan ahead',
|
||||
pages: 320,
|
||||
},
|
||||
{
|
||||
title: 'Atomic Habits',
|
||||
author: 'James Clear',
|
||||
about: 'A practical book about discarding bad habits and building good ones',
|
||||
pages: 320,
|
||||
},
|
||||
{
|
||||
title: 'Choose Your Enemies Wisely: Business Planning for the Audacious Few',
|
||||
author: 'Patrick Bet-David',
|
||||
about:
|
||||
"A book that emphasizes the importance of identifying and understanding one's adversaries to succeed in the business world",
|
||||
pages: 304,
|
||||
},
|
||||
{
|
||||
title: 'The Embedded Entrepreneur',
|
||||
author: 'Arvid Kahl',
|
||||
about: 'A book focusing on how to build an audience-driven business',
|
||||
pages: 308,
|
||||
},
|
||||
{
|
||||
title: 'How to Be a Coffee Bean: 111 Life-Changing Ways to Create Positive Change',
|
||||
author: 'Jon Gordon',
|
||||
about: 'A book about effective ways to lead a coffee bean lifestyle',
|
||||
pages: 256,
|
||||
},
|
||||
{
|
||||
title: 'The Creative Mindset: Mastering the Six Skills That Empower Innovation',
|
||||
author: 'Jeff DeGraff and Staney DeGraff',
|
||||
about: 'A book on how to develop creativity and innovation skills',
|
||||
pages: 168,
|
||||
},
|
||||
{
|
||||
title: 'Rich Dad Poor Dad',
|
||||
author: 'Robert Kiyosaki and Sharon Lechter',
|
||||
about: 'A book about financial literacy, financial independence, and building wealth. ',
|
||||
pages: 336,
|
||||
},
|
||||
{
|
||||
title: 'Zero to Sold',
|
||||
author: 'Arvid Kahl',
|
||||
about: 'A book on how to bootstrap a business',
|
||||
pages: 500,
|
||||
},
|
||||
];
|
||||
|
||||
--fcc-editable-region--
|
||||
|
||||
--fcc-editable-region--
|
||||
```
|
||||
@ -0,0 +1,88 @@
|
||||
---
|
||||
id: 681dc1bbbf0d2e85ac499cf6
|
||||
title: Step 5
|
||||
challengeType: 1
|
||||
dashedName: step-5
|
||||
---
|
||||
|
||||
# --description--
|
||||
|
||||
Next, create a function called `getBookInformation` with one parameter. This parameter will represent the array of books when the function is called. You can name this parameter whatever you like.
|
||||
|
||||
# --hints--
|
||||
|
||||
You should create a `getBookInformation` function.
|
||||
|
||||
```js
|
||||
assert.isFunction(getBookInformation);
|
||||
```
|
||||
|
||||
Your `getBookInformation` function should have one parameter.
|
||||
|
||||
```js
|
||||
assert.lengthOf(getBookInformation, 1)
|
||||
```
|
||||
|
||||
# --seed--
|
||||
|
||||
## --seed-contents--
|
||||
|
||||
```js
|
||||
const library = [
|
||||
{
|
||||
title: 'Your Next Five Moves: Master the Art of Business Strategy',
|
||||
author: 'Patrick Bet-David and Greg Dinkin',
|
||||
about: 'A book on how to plan ahead',
|
||||
pages: 320,
|
||||
},
|
||||
{
|
||||
title: 'Atomic Habits',
|
||||
author: 'James Clear',
|
||||
about: 'A practical book about discarding bad habits and building good ones',
|
||||
pages: 320,
|
||||
},
|
||||
{
|
||||
title: 'Choose Your Enemies Wisely: Business Planning for the Audacious Few',
|
||||
author: 'Patrick Bet-David',
|
||||
about:
|
||||
"A book that emphasizes the importance of identifying and understanding one's adversaries to succeed in the business world",
|
||||
pages: 304,
|
||||
},
|
||||
{
|
||||
title: 'The Embedded Entrepreneur',
|
||||
author: 'Arvid Kahl',
|
||||
about: 'A book focusing on how to build an audience-driven business',
|
||||
pages: 308,
|
||||
},
|
||||
{
|
||||
title: 'How to Be a Coffee Bean: 111 Life-Changing Ways to Create Positive Change',
|
||||
author: 'Jon Gordon',
|
||||
about: 'A book about effective ways to lead a coffee bean lifestyle',
|
||||
pages: 256,
|
||||
},
|
||||
{
|
||||
title: 'The Creative Mindset: Mastering the Six Skills That Empower Innovation',
|
||||
author: 'Jeff DeGraff and Staney DeGraff',
|
||||
about: 'A book on how to develop creativity and innovation skills',
|
||||
pages: 168,
|
||||
},
|
||||
{
|
||||
title: 'Rich Dad Poor Dad',
|
||||
author: 'Robert Kiyosaki and Sharon Lechter',
|
||||
about: 'A book about financial literacy, financial independence, and building wealth. ',
|
||||
pages: 336,
|
||||
},
|
||||
{
|
||||
title: 'Zero to Sold',
|
||||
author: 'Arvid Kahl',
|
||||
about: 'A book on how to bootstrap a business',
|
||||
pages: 500,
|
||||
},
|
||||
];
|
||||
|
||||
console.log("Books in the Library:\n");
|
||||
|
||||
--fcc-editable-region--
|
||||
|
||||
--fcc-editable-region--
|
||||
```
|
||||
@ -0,0 +1,129 @@
|
||||
---
|
||||
id: 681dc623b2b18887266777b1
|
||||
title: Step 6
|
||||
challengeType: 1
|
||||
dashedName: step-6
|
||||
---
|
||||
|
||||
# --description--
|
||||
|
||||
In prior lectures, you learned about the `map()` method which creates a new array by applying a given function to each element of the original array.
|
||||
|
||||
Here is an example:
|
||||
|
||||
```js
|
||||
const developers = [
|
||||
{ name: "Alice", city: "New York", title: "Frontend Developer" },
|
||||
{ name: "Bob", city: "San Francisco", title: "Backend Developer" }
|
||||
];
|
||||
|
||||
console.log(developers.map(dev => dev.name));
|
||||
// ["Alice", "Bob"]
|
||||
```
|
||||
|
||||
`dev` in this example represents each object in the `developers` array. Then, dot notation is used to get the `name` from the object. Lastly, the result will be a new array of names.
|
||||
|
||||
Inside the `getBookInformation` function, use the `map()` method on the `catalog` parameter to return a new array of just book titles. Refer to the example if you need help.
|
||||
|
||||
# --hints--
|
||||
|
||||
Your `getBookInformation` function should return an array.
|
||||
|
||||
```js
|
||||
assert.isArray(getBookInformation(library));
|
||||
```
|
||||
|
||||
Your `getBookInformation` function should return an array of strings which represents the book titles.
|
||||
|
||||
```js
|
||||
const testLibrary = [
|
||||
{
|
||||
title: "Title A",
|
||||
author: "Author A",
|
||||
about: "About A",
|
||||
pages: 320,
|
||||
},
|
||||
{
|
||||
title: "Title B",
|
||||
author: "Author B",
|
||||
about: "About B",
|
||||
pages: 320,
|
||||
},
|
||||
{
|
||||
title: "Title C",
|
||||
author: "Author C",
|
||||
about: "About C",
|
||||
pages: 304,
|
||||
},
|
||||
];
|
||||
|
||||
const expected = ["Title A", "Title B", "Title C"];
|
||||
|
||||
assert.deepEqual(getBookInformation(testLibrary), expected);
|
||||
```
|
||||
|
||||
# --seed--
|
||||
|
||||
## --seed-contents--
|
||||
|
||||
```js
|
||||
const library = [
|
||||
{
|
||||
title: 'Your Next Five Moves: Master the Art of Business Strategy',
|
||||
author: 'Patrick Bet-David and Greg Dinkin',
|
||||
about: 'A book on how to plan ahead',
|
||||
pages: 320,
|
||||
},
|
||||
{
|
||||
title: 'Atomic Habits',
|
||||
author: 'James Clear',
|
||||
about: 'A practical book about discarding bad habits and building good ones',
|
||||
pages: 320,
|
||||
},
|
||||
{
|
||||
title: 'Choose Your Enemies Wisely: Business Planning for the Audacious Few',
|
||||
author: 'Patrick Bet-David',
|
||||
about:
|
||||
"A book that emphasizes the importance of identifying and understanding one's adversaries to succeed in the business world",
|
||||
pages: 304,
|
||||
},
|
||||
{
|
||||
title: 'The Embedded Entrepreneur',
|
||||
author: 'Arvid Kahl',
|
||||
about: 'A book focusing on how to build an audience-driven business',
|
||||
pages: 308,
|
||||
},
|
||||
{
|
||||
title: 'How to Be a Coffee Bean: 111 Life-Changing Ways to Create Positive Change',
|
||||
author: 'Jon Gordon',
|
||||
about: 'A book about effective ways to lead a coffee bean lifestyle',
|
||||
pages: 256,
|
||||
},
|
||||
{
|
||||
title: 'The Creative Mindset: Mastering the Six Skills That Empower Innovation',
|
||||
author: 'Jeff DeGraff and Staney DeGraff',
|
||||
about: 'A book on how to develop creativity and innovation skills',
|
||||
pages: 168,
|
||||
},
|
||||
{
|
||||
title: 'Rich Dad Poor Dad',
|
||||
author: 'Robert Kiyosaki and Sharon Lechter',
|
||||
about: 'A book about financial literacy, financial independence, and building wealth. ',
|
||||
pages: 336,
|
||||
},
|
||||
{
|
||||
title: 'Zero to Sold',
|
||||
author: 'Arvid Kahl',
|
||||
about: 'A book on how to bootstrap a business',
|
||||
pages: 500,
|
||||
},
|
||||
];
|
||||
|
||||
console.log("Books in the Library:\n");
|
||||
|
||||
--fcc-editable-region--
|
||||
function getBookInformation(catalog) {
|
||||
|
||||
}
|
||||
--fcc-editable-region--
|
||||
```
|
||||
@ -0,0 +1,90 @@
|
||||
---
|
||||
id: 6822576638d15cff700f091d
|
||||
title: Step 7
|
||||
challengeType: 1
|
||||
dashedName: step-7
|
||||
---
|
||||
|
||||
# --description--
|
||||
|
||||
Now it is time to see what the result will look like in the console.
|
||||
|
||||
Below your `getBookInformation` function, add a `console.log()` and pass in a `getBookInformation()` function call with `library` for the argument.
|
||||
|
||||
When done correctly, you should see an array of book titles in the console.
|
||||
|
||||
# --hints--
|
||||
|
||||
You should have `console.log(getBookInformation(library));` in your code.
|
||||
|
||||
```js
|
||||
assert.match(code, /console\.log\(\s*getBookInformation\(\s*library\s*\)\);?/gi);
|
||||
```
|
||||
|
||||
# --seed--
|
||||
|
||||
## --seed-contents--
|
||||
|
||||
```js
|
||||
const library = [
|
||||
{
|
||||
title: 'Your Next Five Moves: Master the Art of Business Strategy',
|
||||
author: 'Patrick Bet-David and Greg Dinkin',
|
||||
about: 'A book on how to plan ahead',
|
||||
pages: 320,
|
||||
},
|
||||
{
|
||||
title: 'Atomic Habits',
|
||||
author: 'James Clear',
|
||||
about: 'A practical book about discarding bad habits and building good ones',
|
||||
pages: 320,
|
||||
},
|
||||
{
|
||||
title: 'Choose Your Enemies Wisely: Business Planning for the Audacious Few',
|
||||
author: 'Patrick Bet-David',
|
||||
about:
|
||||
"A book that emphasizes the importance of identifying and understanding one's adversaries to succeed in the business world",
|
||||
pages: 304,
|
||||
},
|
||||
{
|
||||
title: 'The Embedded Entrepreneur',
|
||||
author: 'Arvid Kahl',
|
||||
about: 'A book focusing on how to build an audience-driven business',
|
||||
pages: 308,
|
||||
},
|
||||
{
|
||||
title: 'How to Be a Coffee Bean: 111 Life-Changing Ways to Create Positive Change',
|
||||
author: 'Jon Gordon',
|
||||
about: 'A book about effective ways to lead a coffee bean lifestyle',
|
||||
pages: 256,
|
||||
},
|
||||
{
|
||||
title: 'The Creative Mindset: Mastering the Six Skills That Empower Innovation',
|
||||
author: 'Jeff DeGraff and Staney DeGraff',
|
||||
about: 'A book on how to develop creativity and innovation skills',
|
||||
pages: 168,
|
||||
},
|
||||
{
|
||||
title: 'Rich Dad Poor Dad',
|
||||
author: 'Robert Kiyosaki and Sharon Lechter',
|
||||
about: 'A book about financial literacy, financial independence, and building wealth. ',
|
||||
pages: 336,
|
||||
},
|
||||
{
|
||||
title: 'Zero to Sold',
|
||||
author: 'Arvid Kahl',
|
||||
about: 'A book on how to bootstrap a business',
|
||||
pages: 500,
|
||||
},
|
||||
];
|
||||
|
||||
console.log("Books in the Library:\n");
|
||||
|
||||
function getBookInformation(catalog) {
|
||||
return catalog.map(book => book.title);
|
||||
}
|
||||
|
||||
--fcc-editable-region--
|
||||
|
||||
--fcc-editable-region--
|
||||
```
|
||||
@ -0,0 +1,132 @@
|
||||
---
|
||||
id: 6822595203b35c00b87c0524
|
||||
title: Step 8
|
||||
challengeType: 1
|
||||
dashedName: step-8
|
||||
---
|
||||
|
||||
# --description--
|
||||
|
||||
The array of book titles is nice, but it would be nice to display the `title` and `author` for each book like this:
|
||||
|
||||
```js
|
||||
[
|
||||
"Your Next Five Moves: Master the Art of Business Strategy by Patrick Bet-David and Greg Dinkin",
|
||||
"Atomic Habits by James Clear",
|
||||
"Choose Your Enemies Wisely: Business Planning for the Audacious Few by Patrick Bet-David",
|
||||
...
|
||||
]
|
||||
```
|
||||
|
||||
Update your use of the `map()` method to instead return an array of strings in this format: `TITLE by AUTHOR`.
|
||||
|
||||
You will need to use either template literals or string concatenation with the `+` operator to achieve this result.
|
||||
|
||||
# --hints--
|
||||
|
||||
Your `getBookInformation` function should return an array.
|
||||
|
||||
```js
|
||||
assert.isArray(getBookInformation(library));
|
||||
```
|
||||
|
||||
Your `getBookInformation` function should return an array of strings with the `title` and `author` for each book.
|
||||
|
||||
```js
|
||||
const testLibrary = [
|
||||
{
|
||||
title: "Title A",
|
||||
author: "Author A",
|
||||
about: "About A",
|
||||
pages: 320,
|
||||
},
|
||||
{
|
||||
title: "Title B",
|
||||
author: "Author B",
|
||||
about: "About B",
|
||||
pages: 320,
|
||||
},
|
||||
{
|
||||
title: "Title C",
|
||||
author: "Author C",
|
||||
about: "About C",
|
||||
pages: 304,
|
||||
},
|
||||
];
|
||||
|
||||
const expected = [
|
||||
"Title A by Author A",
|
||||
"Title B by Author B",
|
||||
"Title C by Author C"
|
||||
];
|
||||
|
||||
assert.deepEqual(getBookInformation(testLibrary), expected);
|
||||
```
|
||||
|
||||
# --seed--
|
||||
|
||||
## --seed-contents--
|
||||
|
||||
```js
|
||||
const library = [
|
||||
{
|
||||
title: 'Your Next Five Moves: Master the Art of Business Strategy',
|
||||
author: 'Patrick Bet-David and Greg Dinkin',
|
||||
about: 'A book on how to plan ahead',
|
||||
pages: 320,
|
||||
},
|
||||
{
|
||||
title: 'Atomic Habits',
|
||||
author: 'James Clear',
|
||||
about: 'A practical book about discarding bad habits and building good ones',
|
||||
pages: 320,
|
||||
},
|
||||
{
|
||||
title: 'Choose Your Enemies Wisely: Business Planning for the Audacious Few',
|
||||
author: 'Patrick Bet-David',
|
||||
about:
|
||||
"A book that emphasizes the importance of identifying and understanding one's adversaries to succeed in the business world",
|
||||
pages: 304,
|
||||
},
|
||||
{
|
||||
title: 'The Embedded Entrepreneur',
|
||||
author: 'Arvid Kahl',
|
||||
about: 'A book focusing on how to build an audience-driven business',
|
||||
pages: 308,
|
||||
},
|
||||
{
|
||||
title: 'How to Be a Coffee Bean: 111 Life-Changing Ways to Create Positive Change',
|
||||
author: 'Jon Gordon',
|
||||
about: 'A book about effective ways to lead a coffee bean lifestyle',
|
||||
pages: 256,
|
||||
},
|
||||
{
|
||||
title: 'The Creative Mindset: Mastering the Six Skills That Empower Innovation',
|
||||
author: 'Jeff DeGraff and Staney DeGraff',
|
||||
about: 'A book on how to develop creativity and innovation skills',
|
||||
pages: 168,
|
||||
},
|
||||
{
|
||||
title: 'Rich Dad Poor Dad',
|
||||
author: 'Robert Kiyosaki and Sharon Lechter',
|
||||
about: 'A book about financial literacy, financial independence, and building wealth. ',
|
||||
pages: 336,
|
||||
},
|
||||
{
|
||||
title: 'Zero to Sold',
|
||||
author: 'Arvid Kahl',
|
||||
about: 'A book on how to bootstrap a business',
|
||||
pages: 500,
|
||||
},
|
||||
];
|
||||
|
||||
console.log("Books in the Library:\n");
|
||||
|
||||
--fcc-editable-region--
|
||||
function getBookInformation(catalog) {
|
||||
return catalog.map(book => book.title);
|
||||
}
|
||||
--fcc-editable-region--
|
||||
|
||||
console.log(getBookInformation(library));
|
||||
```
|
||||
@ -1,80 +1,69 @@
|
||||
---
|
||||
id: 67116d7584d0b469b14579c1
|
||||
title: Step 4
|
||||
id: 68225ea2f1aae301fa4df0f4
|
||||
title: Step 9
|
||||
challengeType: 1
|
||||
dashedName: step-4
|
||||
dashedName: step-9
|
||||
---
|
||||
|
||||
# --description--
|
||||
|
||||
The rest of the objects representing the books have been filled in for you. You can take a look at them.
|
||||
While the array of results is working, the final desired result should be a string listing all of the books with a title and author.
|
||||
|
||||
Now, you should start working on getting several common parts of the books.
|
||||
This is where the `join()` method comes in. In earlier lectures, you learned that the `join()` method is used to return a new string of all of the array elements concatenated into a single string, with a specified separator between each element.
|
||||
|
||||
Start by displaying all the books. Create a `displayBooks` function with a parameter accepting an array with book objects. The function should return a string that contains the `title`, `author`, and `pages` of all the books in the array passed to function.
|
||||
Here is a refresher:
|
||||
|
||||
```js
|
||||
const developers = ["Naomi", "Tom", "Jessica"];
|
||||
|
||||
const teamList = developers.join("\n");
|
||||
console.log(teamList);
|
||||
// Naomi
|
||||
// Tom
|
||||
// Jessica
|
||||
```
|
||||
|
||||
The separator in this case is the `\n` which represents the newline character.
|
||||
|
||||
Chain the `join()` method with a `\n` for the separator to the `map()`. Now you should see a string in the console instead of the array of results.
|
||||
|
||||
# --hints--
|
||||
|
||||
You should create a `displayBooks` function.
|
||||
Your `getBookInformation` function should return a string.
|
||||
|
||||
```js
|
||||
assert.isFunction(displayBooks)
|
||||
assert.isString(getBookInformation(library));
|
||||
```
|
||||
|
||||
Your `displayBooks` function should have one parameter.
|
||||
Your `getBookInformation` function should return a single string representing the final result.
|
||||
|
||||
```js
|
||||
assert.lengthOf(displayBooks, 1)
|
||||
```
|
||||
|
||||
Your `displayBooks` function should use a higher order function. Ex. (`filter`, `map`, `reduce`)
|
||||
|
||||
```js
|
||||
assert.match(displayBooks.toString(), /filter|map|reduce|forEach/);
|
||||
```
|
||||
|
||||
Your `displayBooks` function should return a string.
|
||||
|
||||
```js
|
||||
assert.isString(displayBooks(library))
|
||||
```
|
||||
|
||||
Your `displayBooks` function should return each book title, author and number of pages, for all books in the array passed to it.
|
||||
|
||||
```js
|
||||
const libraryBooks = displayBooks(library);
|
||||
library.forEach((book) => {
|
||||
assert.include(libraryBooks, book.title);
|
||||
assert.include(libraryBooks, book.author);
|
||||
assert.include(libraryBooks, book.pages.toString());
|
||||
});
|
||||
|
||||
const _differentLibrary = [
|
||||
const testLibrary = [
|
||||
{
|
||||
title: 'Title A',
|
||||
author: 'Author A',
|
||||
about: 'About A',
|
||||
title: "Title A",
|
||||
author: "Author A",
|
||||
about: "About A",
|
||||
pages: 320,
|
||||
},
|
||||
{
|
||||
title: 'Title B',
|
||||
author: 'Author B',
|
||||
about: 'About B',
|
||||
title: "Title B",
|
||||
author: "Author B",
|
||||
about: "About B",
|
||||
pages: 320,
|
||||
},
|
||||
{
|
||||
title: 'Title C',
|
||||
author: 'Author C',
|
||||
about: 'About C',
|
||||
title: "Title C",
|
||||
author: "Author C",
|
||||
about: "About C",
|
||||
pages: 304,
|
||||
},
|
||||
];
|
||||
const _differentBooks = displayBooks(_differentLibrary);
|
||||
_differentLibrary.forEach((book) => {
|
||||
assert.include(_differentBooks, book.title);
|
||||
assert.include(_differentBooks, book.author);
|
||||
assert.include(_differentBooks, book.pages.toString());
|
||||
});
|
||||
|
||||
const expected = `Title A by Author A
|
||||
Title B by Author B
|
||||
Title C by Author C`;
|
||||
|
||||
assert.strictEqual(getBookInformation(testLibrary), expected);
|
||||
```
|
||||
|
||||
# --seed--
|
||||
@ -134,7 +123,13 @@ const library = [
|
||||
},
|
||||
];
|
||||
|
||||
console.log("Books in the Library:\n");
|
||||
|
||||
--fcc-editable-region--
|
||||
|
||||
function getBookInformation(catalog) {
|
||||
return catalog.map(book => `${book.title} by ${book.author}`)
|
||||
}
|
||||
--fcc-editable-region--
|
||||
|
||||
console.log(getBookInformation(library));
|
||||
```
|
||||
@ -0,0 +1,90 @@
|
||||
---
|
||||
id: 682264d807fe00058c1ea013
|
||||
title: Step 10
|
||||
challengeType: 1
|
||||
dashedName: step-10
|
||||
---
|
||||
|
||||
# --description--
|
||||
|
||||
For the next part of the workshop, you will focus on displaying a list of book summaries to the console.
|
||||
|
||||
Begin by logging the message `"\nList of book summaries:\n"` to the console. The newline character is added here because there should be a space before and after the message here.
|
||||
|
||||
# --hints--
|
||||
|
||||
You should log the message `"\nList of book summaries:\n"` to the console.
|
||||
|
||||
```js
|
||||
assert.match(code, /console\.log\(("|')\\nList\s+of\s+book\s+summaries:\\n\1\);?/);
|
||||
```
|
||||
|
||||
# --seed--
|
||||
|
||||
## --seed-contents--
|
||||
|
||||
```js
|
||||
const library = [
|
||||
{
|
||||
title: 'Your Next Five Moves: Master the Art of Business Strategy',
|
||||
author: 'Patrick Bet-David and Greg Dinkin',
|
||||
about: 'A book on how to plan ahead',
|
||||
pages: 320,
|
||||
},
|
||||
{
|
||||
title: 'Atomic Habits',
|
||||
author: 'James Clear',
|
||||
about: 'A practical book about discarding bad habits and building good ones',
|
||||
pages: 320,
|
||||
},
|
||||
{
|
||||
title: 'Choose Your Enemies Wisely: Business Planning for the Audacious Few',
|
||||
author: 'Patrick Bet-David',
|
||||
about:
|
||||
"A book that emphasizes the importance of identifying and understanding one's adversaries to succeed in the business world",
|
||||
pages: 304,
|
||||
},
|
||||
{
|
||||
title: 'The Embedded Entrepreneur',
|
||||
author: 'Arvid Kahl',
|
||||
about: 'A book focusing on how to build an audience-driven business',
|
||||
pages: 308,
|
||||
},
|
||||
{
|
||||
title: 'How to Be a Coffee Bean: 111 Life-Changing Ways to Create Positive Change',
|
||||
author: 'Jon Gordon',
|
||||
about: 'A book about effective ways to lead a coffee bean lifestyle',
|
||||
pages: 256,
|
||||
},
|
||||
{
|
||||
title: 'The Creative Mindset: Mastering the Six Skills That Empower Innovation',
|
||||
author: 'Jeff DeGraff and Staney DeGraff',
|
||||
about: 'A book on how to develop creativity and innovation skills',
|
||||
pages: 168,
|
||||
},
|
||||
{
|
||||
title: 'Rich Dad Poor Dad',
|
||||
author: 'Robert Kiyosaki and Sharon Lechter',
|
||||
about: 'A book about financial literacy, financial independence, and building wealth. ',
|
||||
pages: 336,
|
||||
},
|
||||
{
|
||||
title: 'Zero to Sold',
|
||||
author: 'Arvid Kahl',
|
||||
about: 'A book on how to bootstrap a business',
|
||||
pages: 500,
|
||||
},
|
||||
];
|
||||
|
||||
console.log("Books in the Library:\n");
|
||||
|
||||
function getBookInformation(catalog) {
|
||||
return catalog.map(book => `${book.title} by ${book.author}`).join("\n");
|
||||
}
|
||||
|
||||
console.log(getBookInformation(library));
|
||||
|
||||
--fcc-editable-region--
|
||||
|
||||
--fcc-editable-region--
|
||||
```
|
||||
@ -0,0 +1,136 @@
|
||||
---
|
||||
id: 6822694e3d34c807feeaba50
|
||||
title: Step 12
|
||||
challengeType: 1
|
||||
dashedName: step-12
|
||||
---
|
||||
|
||||
# --description--
|
||||
|
||||
Just like in a prior step, the desired result would look nicer as a string instead of an array.
|
||||
|
||||
Chain the `join()` method to your existing `map()` method and pass in `"\n"` for the separator to the `join()`.
|
||||
|
||||
Then, below your `getBookSummaries` function, add a `console.log()`. The `console` statement should call the `getBookSummaries` function with `library` for the argument.
|
||||
|
||||
Now, you should see a string for the result in the console.
|
||||
|
||||
# --hints--
|
||||
|
||||
Your `getBookSummaries` function should return a string.
|
||||
|
||||
```js
|
||||
assert.isString(getBookSummaries(library));
|
||||
```
|
||||
|
||||
Your `getBookSummaries` function should return a single string representing the final result.
|
||||
|
||||
```js
|
||||
const testLibrary = [
|
||||
{
|
||||
title: "Title A",
|
||||
author: "Author A",
|
||||
about: "About A",
|
||||
pages: 320,
|
||||
},
|
||||
{
|
||||
title: "Title B",
|
||||
author: "Author B",
|
||||
about: "About B",
|
||||
pages: 320,
|
||||
},
|
||||
{
|
||||
title: "Title C",
|
||||
author: "Author C",
|
||||
about: "About C",
|
||||
pages: 304,
|
||||
},
|
||||
];
|
||||
|
||||
const expected = `About A
|
||||
About B
|
||||
About C`;
|
||||
|
||||
assert.strictEqual(getBookSummaries(testLibrary), expected);
|
||||
```
|
||||
|
||||
You should have a `console.log(getBookSummaries(library));` in your code.
|
||||
|
||||
```js
|
||||
assert.match(code, /console\.log\(\s*getBookSummaries\(\s*library\s*\)\);?/gi);
|
||||
```
|
||||
|
||||
# --seed--
|
||||
|
||||
## --seed-contents--
|
||||
|
||||
```js
|
||||
const library = [
|
||||
{
|
||||
title: 'Your Next Five Moves: Master the Art of Business Strategy',
|
||||
author: 'Patrick Bet-David and Greg Dinkin',
|
||||
about: 'A book on how to plan ahead',
|
||||
pages: 320,
|
||||
},
|
||||
{
|
||||
title: 'Atomic Habits',
|
||||
author: 'James Clear',
|
||||
about: 'A practical book about discarding bad habits and building good ones',
|
||||
pages: 320,
|
||||
},
|
||||
{
|
||||
title: 'Choose Your Enemies Wisely: Business Planning for the Audacious Few',
|
||||
author: 'Patrick Bet-David',
|
||||
about:
|
||||
"A book that emphasizes the importance of identifying and understanding one's adversaries to succeed in the business world",
|
||||
pages: 304,
|
||||
},
|
||||
{
|
||||
title: 'The Embedded Entrepreneur',
|
||||
author: 'Arvid Kahl',
|
||||
about: 'A book focusing on how to build an audience-driven business',
|
||||
pages: 308,
|
||||
},
|
||||
{
|
||||
title: 'How to Be a Coffee Bean: 111 Life-Changing Ways to Create Positive Change',
|
||||
author: 'Jon Gordon',
|
||||
about: 'A book about effective ways to lead a coffee bean lifestyle',
|
||||
pages: 256,
|
||||
},
|
||||
{
|
||||
title: 'The Creative Mindset: Mastering the Six Skills That Empower Innovation',
|
||||
author: 'Jeff DeGraff and Staney DeGraff',
|
||||
about: 'A book on how to develop creativity and innovation skills',
|
||||
pages: 168,
|
||||
},
|
||||
{
|
||||
title: 'Rich Dad Poor Dad',
|
||||
author: 'Robert Kiyosaki and Sharon Lechter',
|
||||
about: 'A book about financial literacy, financial independence, and building wealth. ',
|
||||
pages: 336,
|
||||
},
|
||||
{
|
||||
title: 'Zero to Sold',
|
||||
author: 'Arvid Kahl',
|
||||
about: 'A book on how to bootstrap a business',
|
||||
pages: 500,
|
||||
},
|
||||
];
|
||||
|
||||
console.log("Books in the Library:\n");
|
||||
|
||||
function getBookInformation(catalog) {
|
||||
return catalog.map(book => `${book.title} by ${book.author}`).join("\n");
|
||||
}
|
||||
|
||||
console.log(getBookInformation(library));
|
||||
|
||||
console.log("\nList of book summaries:\n");
|
||||
|
||||
--fcc-editable-region--
|
||||
function getBookSummaries(catalog) {
|
||||
return catalog.map((book) => book.about)
|
||||
}
|
||||
|
||||
--fcc-editable-region--
|
||||
```
|
||||
@ -0,0 +1,98 @@
|
||||
---
|
||||
id: 68226c92f138dd09cd5b9722
|
||||
title: Step 13
|
||||
challengeType: 1
|
||||
dashedName: step-13
|
||||
---
|
||||
|
||||
# --description--
|
||||
|
||||
For this next part of the workshop, you are going to learn how to display a list of books by author.
|
||||
|
||||
Begin by logging the message `"\nList of books by Arvid Kahl:\n"` to the console.
|
||||
|
||||
# --hints--
|
||||
|
||||
You should log the message `"\nList of books by Arvid Kahl:\n"` to the console.
|
||||
|
||||
```js
|
||||
assert.match(code, /console\.log\(("|')\\nList\s+of\s+books\s+by\s+Arvid\s+Kahl:\\n\1\);?/);
|
||||
```
|
||||
|
||||
# --seed--
|
||||
|
||||
## --seed-contents--
|
||||
|
||||
```js
|
||||
const library = [
|
||||
{
|
||||
title: 'Your Next Five Moves: Master the Art of Business Strategy',
|
||||
author: 'Patrick Bet-David and Greg Dinkin',
|
||||
about: 'A book on how to plan ahead',
|
||||
pages: 320,
|
||||
},
|
||||
{
|
||||
title: 'Atomic Habits',
|
||||
author: 'James Clear',
|
||||
about: 'A practical book about discarding bad habits and building good ones',
|
||||
pages: 320,
|
||||
},
|
||||
{
|
||||
title: 'Choose Your Enemies Wisely: Business Planning for the Audacious Few',
|
||||
author: 'Patrick Bet-David',
|
||||
about:
|
||||
"A book that emphasizes the importance of identifying and understanding one's adversaries to succeed in the business world",
|
||||
pages: 304,
|
||||
},
|
||||
{
|
||||
title: 'The Embedded Entrepreneur',
|
||||
author: 'Arvid Kahl',
|
||||
about: 'A book focusing on how to build an audience-driven business',
|
||||
pages: 308,
|
||||
},
|
||||
{
|
||||
title: 'How to Be a Coffee Bean: 111 Life-Changing Ways to Create Positive Change',
|
||||
author: 'Jon Gordon',
|
||||
about: 'A book about effective ways to lead a coffee bean lifestyle',
|
||||
pages: 256,
|
||||
},
|
||||
{
|
||||
title: 'The Creative Mindset: Mastering the Six Skills That Empower Innovation',
|
||||
author: 'Jeff DeGraff and Staney DeGraff',
|
||||
about: 'A book on how to develop creativity and innovation skills',
|
||||
pages: 168,
|
||||
},
|
||||
{
|
||||
title: 'Rich Dad Poor Dad',
|
||||
author: 'Robert Kiyosaki and Sharon Lechter',
|
||||
about: 'A book about financial literacy, financial independence, and building wealth. ',
|
||||
pages: 336,
|
||||
},
|
||||
{
|
||||
title: 'Zero to Sold',
|
||||
author: 'Arvid Kahl',
|
||||
about: 'A book on how to bootstrap a business',
|
||||
pages: 500,
|
||||
},
|
||||
];
|
||||
|
||||
console.log("Books in the Library:\n");
|
||||
|
||||
function getBookInformation(catalog) {
|
||||
return catalog.map(book => `${book.title} by ${book.author}`).join("\n");
|
||||
}
|
||||
|
||||
console.log(getBookInformation(library));
|
||||
|
||||
console.log("\nList of book summaries:\n");
|
||||
|
||||
function getBookSummaries(catalog) {
|
||||
return catalog.map((book) => book.about).join("\n");
|
||||
}
|
||||
|
||||
console.log(getBookSummaries(library));
|
||||
|
||||
--fcc-editable-region--
|
||||
|
||||
--fcc-editable-region--
|
||||
```
|
||||
@ -0,0 +1,108 @@
|
||||
---
|
||||
id: 682277e2d3a05f0c5cf34d19
|
||||
title: Step 15
|
||||
challengeType: 1
|
||||
dashedName: step-15
|
||||
---
|
||||
|
||||
# --description--
|
||||
|
||||
Now, it is time to test out your function.
|
||||
|
||||
Add a `console.log()` below your `getBooksByAuthor()` function.
|
||||
|
||||
Inside the `console.log()`, call the `getBooksByAuthor()` function with `library` and `"Arvid Kahl"` for arguments.
|
||||
|
||||
Now, you should see all of the books for that particular author in the console.
|
||||
|
||||
# --hints--
|
||||
|
||||
You should have a `console.log(getBooksByAuthor(library, "Arvid Kahl"))`.
|
||||
|
||||
```js
|
||||
assert.match(code, /console\.log\(\s*getBooksByAuthor\s*\(\s*library\s*,\s*(['"])\s*Arvid\s+Kahl\s*\1\s*\)\s*\)/);
|
||||
```
|
||||
|
||||
# --seed--
|
||||
|
||||
## --seed-contents--
|
||||
|
||||
```js
|
||||
const library = [
|
||||
{
|
||||
title: 'Your Next Five Moves: Master the Art of Business Strategy',
|
||||
author: 'Patrick Bet-David and Greg Dinkin',
|
||||
about: 'A book on how to plan ahead',
|
||||
pages: 320,
|
||||
},
|
||||
{
|
||||
title: 'Atomic Habits',
|
||||
author: 'James Clear',
|
||||
about: 'A practical book about discarding bad habits and building good ones',
|
||||
pages: 320,
|
||||
},
|
||||
{
|
||||
title: 'Choose Your Enemies Wisely: Business Planning for the Audacious Few',
|
||||
author: 'Patrick Bet-David',
|
||||
about:
|
||||
"A book that emphasizes the importance of identifying and understanding one's adversaries to succeed in the business world",
|
||||
pages: 304,
|
||||
},
|
||||
{
|
||||
title: 'The Embedded Entrepreneur',
|
||||
author: 'Arvid Kahl',
|
||||
about: 'A book focusing on how to build an audience-driven business',
|
||||
pages: 308,
|
||||
},
|
||||
{
|
||||
title: 'How to Be a Coffee Bean: 111 Life-Changing Ways to Create Positive Change',
|
||||
author: 'Jon Gordon',
|
||||
about: 'A book about effective ways to lead a coffee bean lifestyle',
|
||||
pages: 256,
|
||||
},
|
||||
{
|
||||
title: 'The Creative Mindset: Mastering the Six Skills That Empower Innovation',
|
||||
author: 'Jeff DeGraff and Staney DeGraff',
|
||||
about: 'A book on how to develop creativity and innovation skills',
|
||||
pages: 168,
|
||||
},
|
||||
{
|
||||
title: 'Rich Dad Poor Dad',
|
||||
author: 'Robert Kiyosaki and Sharon Lechter',
|
||||
about: 'A book about financial literacy, financial independence, and building wealth. ',
|
||||
pages: 336,
|
||||
},
|
||||
{
|
||||
title: 'Zero to Sold',
|
||||
author: 'Arvid Kahl',
|
||||
about: 'A book on how to bootstrap a business',
|
||||
pages: 500,
|
||||
},
|
||||
];
|
||||
|
||||
console.log("Books in the Library:\n");
|
||||
|
||||
function getBookInformation(catalog) {
|
||||
return catalog.map(book => `${book.title} by ${book.author}`).join("\n");
|
||||
}
|
||||
|
||||
console.log(getBookInformation(library));
|
||||
|
||||
console.log("\nList of book summaries:\n");
|
||||
|
||||
function getBookSummaries(catalog) {
|
||||
return catalog.map((book) => book.about).join("\n");
|
||||
}
|
||||
|
||||
console.log(getBookSummaries(library));
|
||||
|
||||
console.log("\nList of books by Arvid Kahl:\n");
|
||||
|
||||
function getBooksByAuthor(catalog, author) {
|
||||
return catalog.filter((book) => book.author === author);
|
||||
}
|
||||
|
||||
--fcc-editable-region--
|
||||
|
||||
--fcc-editable-region--
|
||||
```
|
||||
@ -0,0 +1,116 @@
|
||||
---
|
||||
id: 6827deed7fc01f074c90fc0d
|
||||
title: Step 16
|
||||
challengeType: 1
|
||||
dashedName: step-16
|
||||
---
|
||||
|
||||
# --description--
|
||||
|
||||
It would be nice to test our your `getBooksByAuthor` function with another author.
|
||||
|
||||
Begin by logging the message `"\nList of books by James Clear:\n"` to the console.
|
||||
|
||||
Below that `console.log()`, add another `console.log()`. Inside that `console.log()`, call the `getBooksByAuthor()` function with `library` and `"James Clear"` for arguments.
|
||||
|
||||
Now, you should see all of the books for that particular author in the console.
|
||||
|
||||
# --hints--
|
||||
|
||||
You should log the message `"\nList of books by James Clear:\n"` to the console.
|
||||
|
||||
```js
|
||||
assert.match(code, /console\.log\(("|')\\nList\s+of\s+books\s+by\s+James\s+Clear:\\n\1\);?/);
|
||||
```
|
||||
|
||||
You should have a `console.log(getBooksByAuthor(library, "James Clear"))`.
|
||||
|
||||
```js
|
||||
assert.match(code, /console\.log\(\s*getBooksByAuthor\s*\(\s*library\s*,\s*(['"])\s*James\s+Clear\s*\1\s*\)\s*\)/);
|
||||
```
|
||||
|
||||
# --seed--
|
||||
|
||||
## --seed-contents--
|
||||
|
||||
```js
|
||||
const library = [
|
||||
{
|
||||
title: 'Your Next Five Moves: Master the Art of Business Strategy',
|
||||
author: 'Patrick Bet-David and Greg Dinkin',
|
||||
about: 'A book on how to plan ahead',
|
||||
pages: 320,
|
||||
},
|
||||
{
|
||||
title: 'Atomic Habits',
|
||||
author: 'James Clear',
|
||||
about: 'A practical book about discarding bad habits and building good ones',
|
||||
pages: 320,
|
||||
},
|
||||
{
|
||||
title: 'Choose Your Enemies Wisely: Business Planning for the Audacious Few',
|
||||
author: 'Patrick Bet-David',
|
||||
about:
|
||||
"A book that emphasizes the importance of identifying and understanding one's adversaries to succeed in the business world",
|
||||
pages: 304,
|
||||
},
|
||||
{
|
||||
title: 'The Embedded Entrepreneur',
|
||||
author: 'Arvid Kahl',
|
||||
about: 'A book focusing on how to build an audience-driven business',
|
||||
pages: 308,
|
||||
},
|
||||
{
|
||||
title: 'How to Be a Coffee Bean: 111 Life-Changing Ways to Create Positive Change',
|
||||
author: 'Jon Gordon',
|
||||
about: 'A book about effective ways to lead a coffee bean lifestyle',
|
||||
pages: 256,
|
||||
},
|
||||
{
|
||||
title: 'The Creative Mindset: Mastering the Six Skills That Empower Innovation',
|
||||
author: 'Jeff DeGraff and Staney DeGraff',
|
||||
about: 'A book on how to develop creativity and innovation skills',
|
||||
pages: 168,
|
||||
},
|
||||
{
|
||||
title: 'Rich Dad Poor Dad',
|
||||
author: 'Robert Kiyosaki and Sharon Lechter',
|
||||
about: 'A book about financial literacy, financial independence, and building wealth. ',
|
||||
pages: 336,
|
||||
},
|
||||
{
|
||||
title: 'Zero to Sold',
|
||||
author: 'Arvid Kahl',
|
||||
about: 'A book on how to bootstrap a business',
|
||||
pages: 500,
|
||||
},
|
||||
];
|
||||
|
||||
console.log("Books in the Library:\n");
|
||||
|
||||
function getBookInformation(catalog) {
|
||||
return catalog.map(book => `${book.title} by ${book.author}`).join("\n");
|
||||
}
|
||||
|
||||
console.log(getBookInformation(library));
|
||||
|
||||
console.log("\nList of book summaries:\n");
|
||||
|
||||
function getBookSummaries(catalog) {
|
||||
return catalog.map((book) => book.about).join("\n");
|
||||
}
|
||||
|
||||
console.log(getBookSummaries(library));
|
||||
|
||||
console.log("\nList of books by Arvid Kahl:\n");
|
||||
|
||||
function getBooksByAuthor(catalog, author) {
|
||||
return catalog.filter((book) => book.author === author);
|
||||
}
|
||||
|
||||
console.log(getBooksByAuthor(library, "Arvid Kahl"));
|
||||
|
||||
--fcc-editable-region--
|
||||
|
||||
--fcc-editable-region--
|
||||
```
|
||||
@ -0,0 +1,109 @@
|
||||
---
|
||||
id: 6827e10547fdd308bca1c73d
|
||||
title: Step 17
|
||||
challengeType: 1
|
||||
dashedName: step-17
|
||||
---
|
||||
|
||||
# --description--
|
||||
|
||||
For the last part of the workshop, you will learn how to get the total number of pages for all of the books in the library.
|
||||
|
||||
Start by logging to the message `"\nTotal number of pages for all library books:\n"` to the console.
|
||||
|
||||
# --hints--
|
||||
|
||||
You should log the message `"\nTotal number of pages for all library books:\n"` to the console.
|
||||
|
||||
```js
|
||||
assert.match(code, /console\.log\((["'])\\nTotal\s+number\s+of\s+pages\s+for\s+all\s+library\s+books:\\n\1\);?/);
|
||||
```
|
||||
|
||||
# --seed--
|
||||
|
||||
## --seed-contents--
|
||||
|
||||
```js
|
||||
const library = [
|
||||
{
|
||||
title: 'Your Next Five Moves: Master the Art of Business Strategy',
|
||||
author: 'Patrick Bet-David and Greg Dinkin',
|
||||
about: 'A book on how to plan ahead',
|
||||
pages: 320,
|
||||
},
|
||||
{
|
||||
title: 'Atomic Habits',
|
||||
author: 'James Clear',
|
||||
about: 'A practical book about discarding bad habits and building good ones',
|
||||
pages: 320,
|
||||
},
|
||||
{
|
||||
title: 'Choose Your Enemies Wisely: Business Planning for the Audacious Few',
|
||||
author: 'Patrick Bet-David',
|
||||
about:
|
||||
"A book that emphasizes the importance of identifying and understanding one's adversaries to succeed in the business world",
|
||||
pages: 304,
|
||||
},
|
||||
{
|
||||
title: 'The Embedded Entrepreneur',
|
||||
author: 'Arvid Kahl',
|
||||
about: 'A book focusing on how to build an audience-driven business',
|
||||
pages: 308,
|
||||
},
|
||||
{
|
||||
title: 'How to Be a Coffee Bean: 111 Life-Changing Ways to Create Positive Change',
|
||||
author: 'Jon Gordon',
|
||||
about: 'A book about effective ways to lead a coffee bean lifestyle',
|
||||
pages: 256,
|
||||
},
|
||||
{
|
||||
title: 'The Creative Mindset: Mastering the Six Skills That Empower Innovation',
|
||||
author: 'Jeff DeGraff and Staney DeGraff',
|
||||
about: 'A book on how to develop creativity and innovation skills',
|
||||
pages: 168,
|
||||
},
|
||||
{
|
||||
title: 'Rich Dad Poor Dad',
|
||||
author: 'Robert Kiyosaki and Sharon Lechter',
|
||||
about: 'A book about financial literacy, financial independence, and building wealth. ',
|
||||
pages: 336,
|
||||
},
|
||||
{
|
||||
title: 'Zero to Sold',
|
||||
author: 'Arvid Kahl',
|
||||
about: 'A book on how to bootstrap a business',
|
||||
pages: 500,
|
||||
},
|
||||
];
|
||||
|
||||
console.log("Books in the Library:\n");
|
||||
|
||||
function getBookInformation(catalog) {
|
||||
return catalog.map(book => `${book.title} by ${book.author}`).join("\n");
|
||||
}
|
||||
|
||||
console.log(getBookInformation(library));
|
||||
|
||||
console.log("\nList of book summaries:\n");
|
||||
|
||||
function getBookSummaries(catalog) {
|
||||
return catalog.map((book) => book.about).join("\n");
|
||||
}
|
||||
|
||||
console.log(getBookSummaries(library));
|
||||
|
||||
console.log("\nList of books by Arvid Kahl:\n");
|
||||
|
||||
function getBooksByAuthor(catalog, author) {
|
||||
return catalog.filter((book) => book.author === author);
|
||||
}
|
||||
|
||||
console.log(getBooksByAuthor(library, "Arvid Kahl"));
|
||||
|
||||
console.log("\nList of books by James Clear:\n");
|
||||
console.log(getBooksByAuthor(library, "James Clear"));
|
||||
|
||||
--fcc-editable-region--
|
||||
|
||||
--fcc-editable-region--
|
||||
```
|
||||
Loading…
Reference in New Issue
Block a user