Home > Article > Web Front-end > 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.
The above is the detailed content of How Can I Swap Array Elements in JavaScript Efficiently?. For more information, please follow other related articles on the PHP Chinese website!