Swap values between two variables

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📅 Jun 26, 2019 · 📝 Apr 30, 2020 · ☕ 1 min read

Swapping variables is simple enough, but can it be any simpler?

Consider the below code -

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let x = 1;
let y = 3;

To swap values -

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let z = x;

x = y;
y = z;
console.log(x, y);
// 3 1

Applying our earlier knowledge about destructuring objects(/destructuring-assignments-in-javascript/), we can instead do -

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let x = 1;
let y = 3;

[x, y] = [y, x];
console.log(x, y);
// 3 1

Beautiful, isn’t it?

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WRITTEN BY

Prashanth Krishnamurthy

Technologist | Creator of Things

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