refactor(curriculum): JavaScript Maps and Sets quiz and review (#58524)

Co-authored-by: Sem Bauke <sem@freecodecamp.org>
Co-authored-by: Dario-DC <105294544+Dario-DC@users.noreply.github.com>

curriculum/challenges/english/25-front-end-development/quiz-javascript-maps-and-sets/67358be1c7903489c0a7db78.md

@@ -33,29 +33,29 @@ A collection that does not allow deletion of its elements.
 
 #### --answer--
 
-A collection of unique values, where each value can only occur once.
+A collection in which a value can only occur once.
 
 ### --question--
 
 #### --text--
 
-Which of the following is NOT a characteristic of a JavaScript Set?
+Which of the following methods is available in Maps but not in Sets?
 
 #### --distractors--
 
-It stores elements in insertion order.
+`has()`.
 
 ---
 
-It only stores unique values.
+`clear()`.
 
 ---
 
-It allows iteration.
+`values()`.
 
 #### --answer--
 
-It allows duplicate values.
+`set()`.
 
 ### --question--
 
@@ -105,28 +105,23 @@ How do you check if a Set contains a certain value?
 
 #### --text--
 
-What will the following code output?
-
-```js
-const mySet = new Set([1, 1, 2, 3]);
-console.log(mySet.size);
-```
+Which of these is a great use case for Sets?
 
 #### --distractors--
 
-4
+Managing key-value pairs in a database.
 
 ---
 
-0
+Creating ordered lists of items.
 
 ---
 
-1
+Storing hierarchical data structures in the browser local storage.
 
 #### --answer--
 
-3
+Eliminating duplicates from an array.
 
 ### --question--
 
@@ -148,7 +143,7 @@ A Set-like collection that prevents values from being removed.
 
 #### --answer--
 
-A Set-like collection that only stores objects and allows garbage collection.
+A Set-like collection that only stores objects.
 
 ### --question--
 
@@ -297,7 +292,7 @@ What does the `size` property of a Map return?
 
 #### --distractors--
 
-The number of unique keys in the Map.
+The number of indexes in the Map.
 
 ---
 
@@ -331,7 +326,7 @@ A Map-like collection that automatically sorts its keys.
 
 #### --answer--
 
-A Map-like collection with objects as keys that allows garbage collection.
+A Map-like collection with weak references to the keys.
 
 ### --question--
 
@@ -413,41 +408,41 @@ How can you iterate over the values in a Set?
 
 #### --distractors--
 
-Using `.forEach()`, or `.map()`.
+By using the `.map()` method.
 
 ---
 
-Using `.reduce()` or `.filter()`.
+By using the `.reduce()` method.
 
 ---
 
-Using `.keys()` or a loop.
+By using the `.filter()` method.
 
 #### --answer--
 
-Using `.forEach()` or a loop.
+By using the `.forEach()` method.
 
 ### --question--
 
 #### --text--
 
-What does `Map.prototype.get()` do?
+Which two methods of Sets return a `SetIterator` that contains the values of a certain Set?
 
 #### --distractors--
 
-It retrieves all keys in the Map.
+`entries()` and `values()`.
 
 ---
 
-It sets a new key-value pair in the Map.
+`forEach()` and `values()`.
 
 ---
 
-It returns the size of the Map.
+`has()` and `add()`.
 
 #### --answer--
 
-It retrieves the value for a specified key.
+`keys()` and `values()`.
 
 ### --question--
 

curriculum/challenges/english/25-front-end-development/review-javascript-maps-and-sets/6723d027b02e4cc6ee5944da.md

@@ -26,6 +26,8 @@ console.log(set); // Set { 1, 2, 3, 4, 5 }
   - `delete()`: Removes an element from the `Set`.
   - `has()`: Checks if an element exists in the `Set`.
   - `clear()`: Removes all elements from the `Set`.
+  - `keys()` and `values()`: Both returns a `SetIterator` that contains the values of the `Set`. They are the same because `keys()` is an alias for `values()`.
+  - `forEach()`: for iterating over the values of the `Set`.
 
 ## Weaksets in JavaScript
 
@@ -60,13 +62,15 @@ console.log(map); // Map(3) { 'flower' => 'rose', 'fruit' => 'apple', 'vegetable
   - `has()`: Checks if a key exists in the `Map`.
   - `clear()`: Removes all key-value pairs from the `Map`.
 
+Note that both Maps and Sets have the `size` property that returns the number of unique elements in them.
+
 ## WeakMaps in JavaScript
 
 - A `WeakMap` is a collection of key-value pairs just like `Map`, but with weak references to the keys. The keys must be an object and the values can be anything you like.
 
 ## Maps vs WeakMaps
 
-- WeakMaps are similar to WeakSets in that they only store objects and the references to those objects are "weak."
+- WeakMaps are similar to WeakSets in that they only store objects and the references to those objects are "weak".
 
 # --assignment--