Do you know what will be the output of this code? let a = 1; let b = 2; [a, b] = [b, a]; console.log(a, b);

How do you swap two variables with destructuring?

Do you know what will be the output of this code?

JavaScript

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

Show answer and explanation

The answer is 2 1.

The right side creates a new array [2, 1] first, then destructuring assigns its items to a and b.