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Web design tutorial

Pure JS implementation selects DOM based on CSS class

// I have modified some of the code myself // The code is as follows, pure JS, and the browser requires the getElementsByClassName method to copy the code as follows:<script type="text/javascript"> function getEl

2025-02-12
CANVAS and HTML5 Implementation of Video Screenshot Function Examples

During this time, I have been studying Canvas. Suddenly I want to make a function that can be used to take a screenshot, and then pull the picture to make an emoji, hahahahahaha ~~ Production method: 1. Load the video on the page to use Canvas to make thi

2025-02-12
Examples of the use of FileRereader interface in html5

It is used to read the file into the memory and read the data in the file. The FileReader interface provides an asynchronous API that uses this API to access the file system asynchronous in the browser's main thread to read the data in the file. At pr

2025-02-12
Automatic playback function on background music in HTML5

The automatic playback attributes of music, here are also introduced:<audio controls=controls autoplay=autoplay><source src=song.ogg type=audio/ogg />

2025-02-12
Sample code for quickly creating HTML5 Canvas telecom network topology diagram

Preface Everyone must be familiar with the attribute list. Normally, the attribute list made using HTML5 is probably a drop-down menu. And in many cases, the drop-down list is not beautiful enough. What should I do? I tried to use HT for Web to realize th

2025-02-12
Detailed explanation of two ways to draw text around an arc on canvas

The tutorial is written directly in radians. I tried to rewrite it in angles. There are some differences. In summary, it is more convenient to use radians. Of course, you can decide which one is easier to understand when writing code. Sometimes you don’t

2025-02-12
Example of accurate calculation of addition and subtraction in js

/Precise addition and subtraction. For example, 0.1+0.2=0.3 or 0.1-0.2=-0.1 The code copy is as follows: function addFn(dataOne,dataTwo){ var dataOneInt=dataOne.toString().spli

2025-02-12
HTML5 new feature multi -threaded

There is no doubt that javascript. There is no multi -threaded saying. He can only do one thing one thing, do one thing and do the next thing. If one thing, then the browser will be stuck for a while and does not respond to the user’s operation. What shou

2025-02-12
js sample code for efficiently removing duplicate elements from an array

Copy the code as follows: function unique(data){ data = data || []; var a = {}; for (var i=0; i

2025-02-12
js calls iframe to implement the method of printing page content

1. Program description 1) This program can select an area on the page for printing and print in iframe mode; 2) The difference from the original print() is that after canceling the printing page, the content of the currently accessed page can be completel

2025-02-12
Details that web page producers pay attention to when designing web pages

1. Separate all css and javascript into external files using the following method.

2025-02-12
js get current address JS get current URL sample code

The code copy is as follows: <table width=100% cellpadding=0 cellspacing=0 border=0 ><script language="javascript">thisURL = document.URL;

2025-02-12
Based on HTML implementation of multiple map upload preview functions

I recently wrote a script uploaded by multiple pictures of web pages. It feels very practical, so don’t say the details, just post the code ~ <head><style>.pro_img{ margin-left:10px;margin-top:10px;width:300px;height: 300p

2025-02-12
IE6 cannot correctly parse CSS files due to encoding problems

I don't know if you have encountered this problem, but I encountered this problem when I released Maxthon 1.0. I didn't find it at that time. It was only when someone notified me after using it. Later, I spent a lot of time looking for the problem

2025-02-12
The 55 most commonly used classic tips in Javascript (4)

52. Show all links and add the following code<body> In the area<script language="JavaScript1.2"> <!-- function extractlinks(){ var links=document.all.tags("A")

2025-02-12

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