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];

删除第一个元素

我想删除数组的第一个元素，使其变为:

Remove the first element

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

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

删除第二个元素

扩展这个问题，如果我想删除数组的第二个元素，使它变成:

Remove the second element

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

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

推荐答案

要获得更灵活的解决方案，请使用 splice() 函数.它允许您根据索引值删除数组中的任何项目:

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);

这篇关于如何从 JavaScript 中的数组中删除元素?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！