Array Flatten in JavaScript — Nested Arrays Ko Seedha Kaise Karein

let’s start simple. tumne kabhi aisa array dekha hai? const arr = [1, [2, 3], [4, [5, 6]]]; ab sawal: 👉 isko kaise banaoge: [1, 2, 3, 4, 5, 6] Yeh Problem Kya Hai? 👉 nested arrays (arrays ke anda