JavaScript Array Methods Cheat Sheet

Master these array methods for cleaner code.

const arr = [1, 2, 3, 4, 5];
arr.map(x => x * 2);  // [2, 4, 6, 8, 10]
arr.filter(x => x > 2);  // [3, 4, 5]
arr.reduce((acc, x) => acc + x, 0);  // 15
arr.find(x => x > 3);  // 4