reasssign destructuuring in js code example

Example 1: destructure array javascript

var [first, second, ...rest] = ["Mercury", "Earth", ...planets, "Saturn"];

Example 2: javascript function destructuring

function f() {
  return [1, 2];
}

let a, b; 
[a, b] = f(); 
console.log(a); // 1
console.log(b); // 2