javascript - Javascript交换数组元素(Javascript swap array elements)

Question

Is there any simpler way to swap two elements in an array?(有没有更简单的方法来交换数组中的两个元素？)

var a = list[x], b = list[y]; list[y] = a; list[x] = b;   ask by ken translate from so

Answer 1

You only need one temporary variable.(您只需要一个临时变量。)

var b = list[y]; list[y] = list[x]; list[x] = b; Edit hijacking top answer 10 years later with a lot of ES6 adoption under our belts:(10年后，我们大量采用了ES6，从而编辑劫持性最高答案：) Given the array arr = [1,2,3,4] , you can swap values in one line now like so:(给定数组arr = [1,2,3,4] ，您现在可以像这样在一行中交换值：) [arr[0], arr[1]] = [arr[1], arr[0]]; This would produce the array [2,1,3,4] .(这将产生数组[2,1,3,4] 。) This is destructuring assignment .(这是破坏性的任务 。)