How to delete the last element of javascript array

Delete method: 1. Use the pop() method of Array, the syntax is "array.pop()"; 2. Use the delete operator, the syntax is "delete arr[arr.length-1]"; 3. Use splice() method, syntax "arr.splice(-1,1)".

The operating environment of this tutorial: windows7 system, javascript version 1.8.5, Dell G3 computer.

Method 1: Use the pop() method----you can delete an element at the end of the array

array.pop() method can delete the last element in the array element and returns the deleted element.

Let’s take a closer look at the following example:

var arr = [2,4,6,8,10]; //定义数组 arr.pop(); console.log(arr)

Method 2: Use the delete operator to delete the last element of the array

var arr = [2,4,6,8,10]; //定义数组 var len=arr.length;//计算数组长度 delete arr[len-1]; //删除最后一个元素（数组长度-1） console.log(arr);

Method 3: Use splice() method

var arr= [1,2,3,4,5]; //从倒数第二个元素开始，截取两个元素 arr.splice(-1,1); console.log(arr);

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