How Can I Swap Array Elements in JavaScript Efficiently?

Swapping Array Elements in JavaScript: A Simplified Approach

Exchanging elements in an array can often involve a series of assignments. A common method is:

var a = list[x], b = list[y];
list[y] = a;
list[x] = b;

However, a simpler solution exists, requiring only one temporary variable:

var b = list[y];
list[y] = list[x];
list[x] = b;

ES6 Destructuring to the Rescue

With the advent of ES6, swapping array elements becomes even more concise thanks to destructuring assignment. Given an array arr = [1,2,3,4], you can now swap values in one line:

[arr[0], arr[1]] = [arr[1], arr[0]];

This results in the modified array [2,1,3,4]. This elegant technique simplifies array manipulation and enhances code readability.

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