js destructuring

[a, b] = ['hi', 'haha']

console.log(a)
// hi
console.log(b)
// haha

const nums = [1,2,3]
[num1, , num3] = nums
console.log(num1)
// 1
console.log(num3)
// 3

{a} = {name:'king', age:26}
console.log(a)
// king