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JS generates simple instances of random arrays that are not repeated

JS generates a simple instance of a random array that does not repeat //Gets the random number in the array //HF.Math.RandomNumbers is a prefix and can be defined by yourself. It mainly depends on the logical code HF.Math.RandomNumbers = function (startNu

2025-07-06
js uses regular expression to check whether the input content is a URL

The function of js regular checking whether the input is a URL is also very common in web pages. When filling in personal homepages with friendly links and forms, use JavaScript to verify whether it is a URL. This test is not easy to write, so it is bette

2025-07-06
Baidu map front-end web API instance code with positioning the current location

Without further ado, I will post code to you directly. The specific code is as follows, and the key code is as follows:<!DOCTYPE html><html lang="zh-cn"><head>

2025-07-06
Event delegation and benefits in JavaScript

1. What is event commission: In layman's terms, events are onclick, onmouseover, onmouseout, etc., etc. are events. As for delegation, they are asked to do it. This event was originally added to certain elements, but you add it to others to do it to c

2025-07-06
Complete example of the image page turn button effect of JS imitating Tencent Picture Station

This article describes the effect of JS imitating the image page turn button of Tencent Picture Station. I will share it with you for your reference. The specific details are as follows: The screenshot of the operation effect is as follows: The specific c

2025-07-06
JS implements a simple lottery program that can be controlled by keyboard

This article shares the code of writing js lottery program and the precautions for writing. Interested friends can refer to the code:<!DOCTYPE html><html lang="en"><head><meta charset="UTF-8"><title> Simple

2025-07-06
Detailed explanation of common npm commands in Nodejs

What is npm NPM The full name is Node Package Manager. It is a package management and distribution tool installed with NodeJS. It is very convenient for JavaScript developers to download, install, upload and manage installed packages. npm is a node packag

2025-07-06
indexedDB bootstrap angularjs MVC DOMO (Application Example)

1. indexedDB (Model)-- front-end browser object-type database. Generally, the databases we use in the background are relational databases. So what are the characteristics of indexeddb: First of all, it is an indexed database in terms of literal meaning, w

2025-07-06
Complete example of mouse box selection effect by JS

This article describes the method of JS to achieve mouse box selection effect. Share it for your reference, as follows:

2025-07-06
Clever talk about onBlur events and onfocus events (js)

The onFocus event is an event that occurs when the cursor falls into the text box. The onBlur event is an event that occurs when the cursor loses focus. You can compile the following example 1.html<HTML><HEAD><TITLE> Use onBlur event handler</TITLE></HEAD

2025-07-06
A brief discussion on the addition, deletion, modification and search of arrays in JavaScript

Adding an array ary.push() Adding an element to the end of the array, which returns the length of the new array after being added, and the original array changes ary.unshift() Adding an element to the beginning of the array, which returns the length of th

2025-07-06
js simple method to determine whether flash is loading

This article describes how to simply judge whether flash is loaded or not. Share it for your reference, as follows:<script type="text/javascript"> //判定是否加载成功 function checkLoaded(flash){

2025-07-06
Summary of Form Form Technology in JavaScript (recommended)

This is not a very complicated background verification and JavaScript regular expressions. I just briefly introduce this technology, simple background reception and jump, and just understand how to verify it. I will continue to write blogs for specific te

2025-07-06
Ext JS dynamically load JavaScript to create a form

JavaScript does not require compilation to run, which makes applications built by JavaScript very flexible. We can dynamically load JavaScript scripts from the server as needed to create and control the UI to interact with users. The following is a combin

2025-07-06
Introduction to setter and getter methods in JavaScript

Setters and getters in JavaScript are methods that are less exposed to in normal times. They are not standard methods themselves and are only supported in non-IE browsers (there may be other methods that can be done by the ie kernel? I don’t know the solu

2025-07-06

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