JavaScript8 min read

JavaScript String Methods

Master JavaScript string methods. Learn to manipulate, search, and transform strings.

Alex Thompson
December 19, 2025
0.0k0

JavaScript String Methods

Common String Methods

```javascript const text = 'Hello World';

text.length; // 11 text.toUpperCase(); // "HELLO WORLD" text.toLowerCase(); // "hello world" text.includes('World'); // true text.indexOf('o'); // 4 text.slice(0, 5); // "Hello" text.replace('World', 'JS'); // "Hello JS" text.split(' '); // ["Hello", "World"] ```

Key Takeaway

String methods manipulate text. Use includes() to check, slice() to extract, replace() to change. Essential for text processing.

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