Swapping variables values hasn’t been that easy in JavaScript

Now with new language features Javascript swap variable values very easily.

While doing laundry a thought popped up in my mind and how it relates to JavaScript.

Imagine the following picture.

Now how you could swap clothes from these two machines. You do need a temporary container to hold clothes from side and make the transformation happen. Same the case with Programming (although this tutorial isn’t limited to JavaScript only)

let a = 123;
let b = 456;
let temp = a;
a = b;
b = temp;

console.log(a);     //456
console.log(b);     //123

Here the temp variable does the job of temporary container. But the new JavaScript destructuring assignment syntax makes even easier and less confusing.

let a = 123;
let b = 456;
[a,b] = [b,a];

console.log(a,b);     // 456 123