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HTML tutorial

HTML5+WebSocket implements examples of multi -file uploading at the same time

Uploading multiple files at the same time in the traditional HTTP application and uploading and viewing the progress of uploading is a very troublesome thing. Of course The control of and uploading the control is very flexible. HTML5 provides a series of

2025-02-13
Detailed explanation of html5 canvas WeChat poster sharing (personal climbing pit)

This article introduces canvas WeChat poster sharing, sharing it with everyone, the details are as follows: Randomly generate a picture and get the avatar and title of the WeChat user (adjust the back-end interface to obtain it), combine the user's av

2025-02-13
IMG tags in html only display the method of the center position of the picture (three methods)

The method of the IMG tag displaying the picture center in HTML is currently known. Here is the first type: use the CSS CLIP: Rect (TOP RIGHT BOTTOM LEFT);

2025-02-13
HTML is larger than numbers, small, space, space, quotation, etc.

The form is as follows: HTML original code display results describe << Small or displayed marker >> greater than number or display label && can be used to display other special characters "quotation ®® ©© copyright ™ ™ trademark s

2025-02-13
Pure HTML5+CSS3 production birthday cake code

Draw a simple cake to celebrate the good day today, the fun and sorrow of programmers. The writing is relatively simple, take a look interested. First send a renderings. The cake is divided into three parts, the bottom cake, the top cake and the candle pa

2025-02-12
Implementation code for changing transparency of Canvas pixel processing

1. Definition and usage The getImageData() method returns an ImageData object, which copies the pixel data of the specified rectangle of the canvas. Note: The ImageData object is not an image. It specifies a portion (rectangle) of the canvas and saves the

2025-02-12
Sample code for WebGL 3D version of Tetris based on HTML5

Summary of the preface: 2D Tetris has been played badly by people, so on a whim, I made a 3D game console for playing Tetris. . . The basic idea of implementation is to first implement the Tetris mini-game in 2D, then use the 3D modeling function to cre

2025-02-12
Implementation of drag-and-drop object in Canvas advanced path operation

To keep track of what is being drawn, many applications, such as drawing applications, computer-aided design systems (CAD systems), and games, maintain a list of currently displayed objects. Typically, these applications allow the user to view the current

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
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
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

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