How do you use destructuring to swap two variables in JavaScript?
Asked on Oct 05, 2025
Answer
Destructuring in JavaScript allows you to easily swap two variables without using a temporary variable. Here's how you can do it:
<!-- BEGIN COPY / PASTE -->
let a = 1;
let b = 2;
[a, b] = [b, a];
console.log(a); // 2
console.log(b); // 1
<!-- END COPY / PASTE -->Additional Comment:
✅ Answered with JavaScript best practices.- The code swaps the values of "a" and "b" using array destructuring.
- "[a, b] = [b, a];" is the key line where the swap happens.
- This method is concise and avoids the need for a temporary variable.
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