JavaScript String Methods

Common String Methods

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.