How to work with strings
Create strings
Single and double quotes both create strings. Escape a matching quote or choose the other delimiter.
const first = "JavaScript";
const sentence = 'She said "hello".';
const path = "C:\\Users\\Learner";
console.log(first, sentence, path);Build text with template literals
Backticks support interpolation with ${...} and can span lines.
const name = "Sam";
const completed = 4;
console.log(`${name} completed ${completed + 1} lessons.`);Inspect and transform text
Strings are immutable: methods return new strings rather than changing the original.
const raw = " Learn JavaScript ";
const clean = raw.trim();
console.log(clean.length);
console.log(clean.toUpperCase());
console.log(clean.includes("Java"));Extract and split text
Indexes start at zero. Use slice for a portion and split to make an array.
const language = "JavaScript";
console.log(language[0]); // J
console.log(language.slice(4)); // Script
console.log("red,green,blue".split(","));