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This article mainly explains the "js array how to delete the specified location elements", the article explains the content is simple and clear, easy to learn and understand, the following please follow the editor's ideas slowly in-depth, together to study and learn "js array how to delete the specified location elements" bar!

1. Splice () method syntax

Splice (index,len, [item])

Note: this method changes the original array.

2. Parameters

Can be used to replace / delete / add one or more values in an array

Index: array start subscript

Len: length of replacement / deletion

Item: the value to replace. Item is empty for delete operation.

3. Use examples

Array.pArray.prototype.indexOf = function (val) {/ / prototype add attribute for to the array (var I = 0; I

< this.length; i++) { //this是指向数组，this.length指的数组类元素的数量 if (this[i] == val) return i; //数组中元素等于传入的参数，i是下标，如果存在，就将i返回 } return -1; }; Array.prototype.remove = function(val) { //prototype 给数组添加属性 var index = this.indexOf(val); //调用index()函数获取查找的返回值 if (index >

-1) {this.splice (index, 1); / / use the splice () function to delete the specified element, and the splice () method is used to insert, delete or replace elements of the array}}; var array = [1,2,3,4,5]; array.remove (3) Thank you for your reading, the above is the "js array how to delete the specified location elements" of the content, after the study of this article, I believe you on the js array how to delete the specified location elements of this problem has a deeper understanding, the specific use of the situation also needs to be verified in practice. Here is, the editor will push for you more related knowledge points of the article, welcome to follow!

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