how to swap values in javascript code example

Example 1: swap two variables javascript

var a = 1,
    b = 2;
b = [a, a = b][0];

Example 2: javascript swap two variables

[a, b] = [b, a];

Example 3: javascript swap variables

var a = 5;
var b = 3;
[a, b] = [b, a];

Example 4: swap numbers in javascript

let a = 1;
let b = 2;
let temp;

temp = a;a = b;b = temp;
a; // => 2
b; // => 1