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Sample code for how to use canvas to implement online signature

With the rapid development of computer and network technology, online signature technology is increasingly used in paperless offices. This intuitive and convenient operation can not only greatly improve office efficiency, but also uses digital storage met

2025-02-04
HTML5 Canvas Basic Drawing Graphic Combination

<canvas></canvas>Just a container drawn graphic, in addition to ID, class, style and other attributes, there are Height and Width properties. exist<canvas> > There are three main steps on elements: 1. Get<canvas> The DOM object corresponding to the ele

2025-02-04
Professional specifications for the code in the head area of the website home page

The head area refers to the HTML code of the homepage<head> and</head> content between. Required tags 1. Company copyright annotation 2. Web page display character set Simplified Chinese

2025-02-04
Small way to insert video in html webpage

现在如果要在页面中使用video标签，需要考虑三种情况，支持Ogg Theora或者VP8（如果这玩意儿没出事的话）的（Opera、Mozilla、Chrome），支持H.264的（Safari、IE 9、 Chrome), none of them (IE6

2025-02-04
How to convert the absolute path of an image into a file object in html5

This article introduces how to convert the absolute path of an image into a file object in HTML5 and shares it with everyone. The details are as follows: Convert the absolute path of an image into base64 encoding. Please read this article. Let’s first und

2025-02-04
H5 META Summary (End at the front end)

As shown below: <meta name=viewport content=width=device-width,initial-scale=1,minimum-scale=1,maximum-scale=1,user-scalable=no>

2025-02-03
JS formatting amount can choose whether to bring thousands of points and retain accuracy

JS formatting amount, whether you can bring a thousand points, you can choose to retain the accuracy, which is also found online, but the use of the code code is as follows: /* Format the value of the values. @Param Num value (Number or String ) @Param Ce

2025-02-03
Popular color elements used in Web 2.0 websites

The following are three sets of color elements that are currently popular on Web 2.0 websites: NeutralsShiny silver [#EEEEEE]Reddit white [#FFFFFF]Magnolia Mag.nolia [#F9F7ED]Interactive ac

2025-02-03
Detailed explanation of px unit html5 responsive solution

The most commonly used h5 responsive solution for mobile terminals in recent years is the rem solution. This requires calculating the font-size of the root element to achieve responsiveness. But this solution also has a disadvantage, that is, when font-si

2025-02-03
HTML5 uses the DRAG event editor to drag and drag up uploading pictures of the example code

The editor's picture uploading is the use of this part of this seajs definition of the Tools module/** * created by zhaojunlike on 8/22/2017. */Define (function (Require, Exports, Module)

2025-02-03
JavaScript automatically add links to the text URL address to share

The implementation of the URL address automatically adds that is actually the content: detection and replacement. The detection "detection" is to detect whether the text (string) has the content that meets the HTTP address. Obviously, this requi

2025-02-03
Detailed explanation of similar labels and attributes in html

【1】<i></i> The same as the label: it means oblique body. Difference: (1) <em>The content that is emphasized <i>is a physical oblique body, which does not have the meaning of content. (2) <em>Tags are labels containing semantics, and search engines will un

2025-02-03
How to draw a polygon based on random points in canvas

The reason is that today when I was studying the book "HTML5+Javascript Animation Basics", in the third section of Chapter 8, I talked about how to use three springs to connect three points to perform stretching movements. After finishing the ex

2025-02-03
Introduction to the use of parseInt() method of global objects in JavaScript

Copy the code code as follows:<html><head><title> parseInt() method of global object</title><script> /* parseInt() 函数可解析一个字符串，并返回一个整数。 1、解析字符串，直到不能解析为止 2、

2025-02-03
A simple clock effect based on HTML5+CSS3

Objective: Use HTML5 to achieve the knowledge point of pendulum effect: 1) Use Positive/Left/TOP and CALC () to achieve the level and vertical center of elements; 2) Use CSS3's Animation/Transform/Transform-Origin attributes;

2025-02-03

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