如何从JavaScript中的数组中删除元素？ [英] How to remove element from an array in JavaScript?

问题描述

  VAR ARR = [1,2,3,5,6];
 

我想删除数组的第一个元素，使之成为：

  VAR ARR = [2,3,5,6];
 

要扩展这个问题，如果我想要删除数组的第二个元素，使之成为：

  VAR ARR = [1,3,5,6];
 

解决方案

有关更灵活的解​​决方案，使用<$c$c>splice()功能。它可以让你在一个阵列基于指标值删除任何项目：

  VAR indexToRemove = 0;
变种numberToRemove = 1;arr.splice（indexToRemove，numberToRemove）;
 

var arr = [1,2,3,5,6];

I want to remove the 1st element of the array so that it becomes:

var arr = [2,3,5,6];

To extend this question, what if I want to remove the 2nd element of the array so that it becomes:

var arr = [1,3,5,6];

解决方案

For a more flexible solution, use the splice() function. It allows you to remove any item in an Array based on Index Value:

var indexToRemove = 0;
var numberToRemove = 1;

arr.splice(indexToRemove, numberToRemove);

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