swap helper method js code example

Example 1: swap function javascript

function swap(x, y) {
    var t = x;
    x = y;
    y = t;
    return [x, y];
}

console.log(swap(2, 3));

Example 2: swap function javascript

let a = 1;
let b = 2;

[a, b] = [b, a];
a; // => 2
b; // => 1