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Detailed explanation of new features of JavaScript_ECMA5 array

var arr = [ 1, 2, 3, 4, 5, 4, 3, 2, 1 ]; Method to add new position: indexOf lastIndexOf1.1 parameter indicates that the value is passed back to the index position (index starts from 0) var index = arr.index

2025-07-26
Listloading.js mobile terminal pull-up and pull-down refresh component

listloading is a mobile pull-up and pull-down loading more components. Mainly rely on components developed based on iscroll.js v5.1.2. The basic library can use jquery.js or zepto.js to operate the dom node. Currently, I use zepto.js as the basic library

2025-07-26
JavaScript must know and know (9) function talks about closure issues

function函数格式function getPrototyNames(o,/*optional*/ a){a = a || [];for(var p in o){a.push(p);}return a;} callerfunc.call

2025-07-26
Recommended three ways to change the css style by js

Shared code:<div id="div"> This is a div</div> var div=document.getElementById('div'); The first type: use cssTextdiv.style.cssText='width:250px;

2025-07-26
Example of rounding problem that preserves n-digit decimal places

This article describes the rounding problem of JS implementing the n-digit decimals. Share it for your reference, the details are as follows: // Round the number (retaining n decimal places) getFloat = function (number, n) { n = n parseInt(n) : 0; i

2025-07-26
Implementing a tree drop-down box based on JavaScript

I often encounter problems with tree structures, such as displaying directory structures. In most cases, the background will return such data, as follows: [{ id: 19, pid: 0, name: 'nodejs' },{ id: 20, pid: 19, name: 'express' },{

2025-07-26
Summary of various sorting methods in data structures (JS implementation)

New technologies are constantly changing, and mastering some foundations is a solid foundation for learning and constantly updating technologies in the future. I have nothing to do recently. In order to review the data structure I learned before, I implem

2025-07-26
A brief analysis of the principle of Javascript self-executing anonymous function (function() { })()

Functions are the most flexible object in JavaScript. Here we just explain the purpose of its anonymous functions. Anonymous functions refer to functions that do not specify function names or pointers. Self-executing anonymous functions are only one of th

2025-07-26
VUEJS actual combat fixes and beautify time (2)

Preface In the previous chapter, we successfully rendered the list page through basic construction. However, there are many problems. In this chapter, we will solve these problems. Use v-bind to bind the data. In the previous chapter, we rendered the page

2025-07-26
The best Angular2 table controls

There are now a large number of JavaScript data table controls on the market, including open source third-party and self-produced and sold. It can be said that Wijmo's Flexgrid is the best table control currently adapted to Angular 2. Angular 2 data t

2025-07-26
Summary of the most commonly used JS plug-in series of Bootstrap (picture carousel, label switching, etc.)

After downloading and installing Bootstrap, you can find 12 JS files in D:/Program Files/nodejs/node_modules/bootstrap/js. These JS files are 12 jQuery plug-ins that come with Bootstrap, and you can also find 12 JS files in D:/Pr

2025-07-26
AngularJS basic ng-if directive usage

AngularJS ng-if directive AngularJS instance is unchecked and the content is removed:<!DOCTYPE html><html><head><meta charset="utf-8">

2025-07-26
A brief discussion on JavaScript standard objects

In the world of JavaScript, everything is an object. But some objects are still different from others. To distinguish the type of an object, we use the typeof operator to get the type of the object, which always returns a string: typeof 123; // 'numbe

2025-07-26
Code analysis of application instance of JS delay prompt box

I won’t say much nonsense, I will just post the code to you. The specific code is as follows:<!DOCTYPE html><html lang="en"><head><meta charset="UTF-8"><title> Delay display prompt box </title><style>#div1

2025-07-26
Teach you how to multiply, square and variable format conversion of operators in JS

1) How to calculate the multiplication square Question 1: 3 to the power of 4 (I can't beat it, please forgive me ==!!!) 3 to the power of 4 = 3*3*3*3var a = Math.pow(3,4); console.log(a); Note: Math.pow() is used to calculate the grammar Note: Math&#

2025-07-26

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