Swap two variables
Written byPhuoc Nguyen
Created
23 Feb, 2021
Category
Tip
Tags
JavaScript
There are a few ways to swap two variables without using a temporary variable:
js
[a, b] = [b, a];
// Or
a = [b, (b = a)][0];
// Or
a = ((x) => x)(b, (b = a));If both variables are numbers, then you can swap them with operators:
js
a = b + ((b = a), 0);
// Or
a = b * ((b = a), 1);
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Phước Nguyễn