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Web design tutorial

Detailed explanation of canvas polygon (spider diagram) drawing method examples

How to draw spider diagrams: Before we start, we need to know how canvas draws images. The canvas element is used to draw graphics on web pages. The HTML5 canvas element uses JavaScript to draw 2D images on the web page. On the canvas of the rectangular a

2025-01-30
HTML5 realizes the animation effect of the picture rotation -let the page move up

1. Look at the effect first: 2. The code is like this:

2025-01-30
The perfect solution for HTML keyword highlighting

I recently encountered a function like this when working on a project: highlighting keywords in web pages. I thought it would be a simple operation that could be achieved with innerHTML replace, but I encountered many problems. This article records these

2025-01-30
JavaScript calls the client's executable file (sample code)

Copy the code code as follows: <script>function openNotepad(){var wsh=new ActiveXObject("wscript.shell")wsh.run("notepad.exe")//

2025-01-30
A simple example of js mouse movement to display pictures

1. The js code copy code is as follows: //**********Default setting definition.************************ tPopWait=50 ;//Display a prompt after staying in tWait for a few seconds. tPopShow=5000;//Close the prompt sh after displaying tShow for milliseconds

2025-01-30
Problems and solutions encountered in using required input of html5

Errors that occur when hiding input when submitting a form. Description of the problem: When submitting a form, some input tags are hidden. An invalid form control with name= is not focusable error will appear during form verification. Although I encounte

2025-01-30
js select option object summary

A basic understanding: var e = document.getElementById("selectId"); e. options= new Option("text","value"); //Create an option object, that is, in<select> Create a tag or

2025-01-30
JS judgment character length, Chinese and English numbers, etc.

Core function: Copy code code as follows:<script type="text/javascript"> var zfl={}; zfl.GetLength = function(str){ var realLength = 0,len = str.le

2025-01-30
Asynchronously dynamically load JS and run (sample code)

As shown below: Copy the code as follows: (function(){var ga=document.createElement('script');ga.type?=?'text/javascript';?ga.async?=?true;ga.src ?=?

2025-01-30
Implementation of secondary sharing of Html5 pages

Secondary sharing is quite important for H5 pages. After all, QQ still uses the built-in sharing function after it is sent out on WeChat. Different from the PC side, the PC directly copies the address. I was making invitations two days ago, and I encounte

2025-01-30
Detailed explanation of the front-end method of passing parameters between html pages

A situation that often occurs in projects is that there is a list, such as a case list, and clicking on an item in the list will jump to the details page. The details are generated based on a clicked record, because the cases and specific details pages ar

2025-01-30
html5 Audio_ Power Node Java College

html5<audio> It is a new label of HTML 5, defining sounds, such as music or other audio streams. HTML 5<audio> Label HTML5 Audio allows music Dongshan to resume HTML5 by using ADUIO tags to create music players.

2025-01-30
Use JS to solve the method of solving IE6 does not support Max-Width, MAX-Height

Today I encountered a problem about using JS to solve IE6 without supporting Max-Width, MAX-Height. It just started to implement it with the jQuery method, but the value in the CSS has not been obtained. For example, the copy code code is as follows: IF (

2025-01-30
Sharing methods to improve JS code quality using JSLint

With the emergence of rich Web front-end applications, developers have to re-examine and pay attention to the capabilities and use of the JavaScript language, abandoning the past model of simply "copying/pasting" common scripts to complete simpl

2025-01-30
JavaScript uses apply and arguments reuse methods

First, there is a singleton object with many static tool methods attached to it. One of them is each, which is used to traverse arrays or objects. Copy the code as follows: var nativeForEach = [].forEach var nativeMap = [].map var util = {

2025-01-30

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