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Summary of the usage of process control statements in JavaScript programs

Conditional judgment statement 1.if statement if (condition) statement1 else statement2 The condition condition in which can be any expression, and the evaluation result of this expression is not necessarily a Boolean value. ECMAScript will automatically

2025-08-18
html5 Use canvas to draw triangles

This article mainly introduces html5 using canvas to draw triangles. Friends who need it can refer to it.<canvas id=canvas width=500 height=500 style=background-color: yellow;></canvas> Copy generation

2025-08-18
js controls DOM to achieve Weibo release effect

The effect of this code is to enter the title and content, click Publish to publish the message, and make the latest message always at the top of the content. The code is:<!DOCTYPE html><html lang="en"><head><meta charset="UTF-8"><title> micro

2025-08-18
JavaScript implements delayed display prompt box special effect code

This article describes the method of using setTimeout to implement a delayed pop-up warning box. Share it for your reference. The details are as follows: First, I will show you the JS code parameter explanation of the delay/timed/forced pop-up window: Set

2025-08-18
Several methods to realize web page jump (meta tags, js implementations, php implementations)

1. To implement meta tags, just add the following sentence to the head. After staying on the current page for 0.1 seconds, jump to the target page to copy the code code as follows:<meta http-equiv="refresh" content="0.1; url=http://VeVB.COm/">

2025-08-18
Some knowledge about javascript and detailed explanation of loops

Some knowledge points of javascript: 1. Five commonly used browsers: chrome, firefox, Safari, ie, opera2. Simplified version of how browsers work: 3.Js consists of ECMAjavascript;DOM;BOM; 4.js is a weak-type language (that is, a browser is required

2025-08-18
Simple examples of localstorage, local database, sessionStorage for html5 local storage, local storage, local database, and sessionStorage

Comment: This article mainly introduces the simple use examples of localstorage, local database, and sessionStorage stored in html5. Friends who need it can refer to a very cool function of html5, which is web storage, which is similar to the previous coo

2025-08-18
Sharing of practical operation techniques for Array in JavaScript

1. The creation of ArrayArray is very flexible. You can use the Array constructor or you can directly create an array "literal". var arr = new Array(); //[]var brr = Array(); //[] The two are equivalent to var arr = Arra

2025-08-18
JS version of date function (same as PHP date function)

Copy the code as follows:/ The same timestamp format function as PHP// @param {string} format format// @param {int} timestamp The time to format is default to the current time// @return {string} formatted

2025-08-18
JS dynamically adds and deletes UL node LI and related content examples

The code copy is as follows:<ul id="ul"><li id=1> 11111111111111111111111111 <a href="javascript:del(1);">del</a></li><li id=2 > 222222222222222222222222222222<a

2025-08-18
Shortest IE judgment var ie=!-[1,] analysis

The shortest IE judgment in the past was made by the feature that IE does not support vertical tabs. The code copy is as follows: var ie = !+"/v1"; only 7bytes are required! See this article, "32 bytes, ehr ... 9, ehr ... 7!!! to know if

2025-08-18
php+js implements countdown function

The js partial copy code code is as follows: setInterval("time_controller()",1000); function time_controller(){$(".time_val").each(function(){var time_id

2025-08-18
Solution to js cannot get attributes of html tags

JavaScript cannot obtain without the attributes of writing tags. Remember, only if you write attributes to the tags, for example, if you want to get the id of a div, but before you explicitly add that there is no such attribute, I wondered why visibility

2025-08-18
Detailed explanation of the method to implement React single page application

First of all, before learning this framework, you need to have some understanding of the following knowledge: 1. Native JS basics 2. CSS basics 3. npm package management basics 4. webpack construction project basics 5. ES6 specifications The above five kn

2025-08-18
HTML5 video tag (player) study notes (I): Getting started with

Recently, I have used the video tag (player) in learning html5. Here are some learning notes to make it easier for you to check and record. This article is the first article and will introduce what work should be done using this tag to initialize it. Ther

2025-08-18

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