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fix(curriculum): update slice method example in JavaScript Strings Review (#59370)
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@ -81,9 +81,9 @@ console.log(text.includes("cat")); // false
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```js
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const text = "freeCodeCamp";
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console.log(text.slice(0,3)); // "free"
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console.log(text.slice(4,8)); // "Code"
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console.log(text.slice(9,13)); // "Camp"
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console.log(text.slice(0, 4)); // "free"
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console.log(text.slice(4, 8)); // "Code"
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console.log(text.slice(8, 12)); // "Camp"
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```
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- **The `toUpperCase()` Method**: This method converts all the characters to uppercase letters and returns a new string with all uppercase characters.
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