Arrow Functions

Arrow functions give you a shorter way to write functions. They use the => syntax and are great for short, single-purpose helpers.

A single expression body returns automatically, so you can drop the return keyword and the braces.

const add = (a, b) => a + b;
const square = n => n * n;
const greet = () => "Hello!";

• One parameter needs no parentheses: n => n * n
• A block body uses braces and an explicit return
• Arrows do not have their own this binding