desconstruction

decons.js

let nums = [1, 2, 3]

let [a, b] = nums

console.log(a) //prints 1
console.log(b) //prints 2

let nums = [1, 2, 3]

let [a, ,c] = nums

console.log(a) //prints 1
console.log(c) //prints 3

let a = 1, b = 2;

let [b, a] = [a, b]

console.log(a) //prints 2
console.log(b) //prints 1

//Swaps the values!