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JS request value and automatic execution use example

There are three commonly used methods for automatic execution of JS functions in web pages. In the head area in HTML, there are the following functions: Copy the code as follows:<SCRIPT LANGUAGE="JavaScript"> functionn MyAutoRun() { //以下是您的函数的代码，请

2025-02-21
Some summary about client XHTML, CSS and JavaScript

This week I learned the syntax basis of 3 parts of the client, xhtml, css and javascript. First: About xhtml attributes (tags) - 1. Form attributes<form action="表单处理程序url" method="gei/post">

2025-02-21
Specific implementation of obtaining non-repeating values from 3 arrays

Copy the code as follows: var a = [ "a" , "b" , "c" ], b = [ "b" , "c" , "d" ], c = [ "c" , "d" , " e" ], _a = a.concat( b ).concat( c ),

2025-02-21
Html5 implementation can zoom clock code

I do n’t say much nonsense, I will post code directly. The specific code is shown below:<!DOCTYPE html><html lang=en><head><meta charset=UTF-8><title> canvas_time</title>

2025-02-21
A UI person’s year-end summary and prospect

From the real UI level, what we have done is far from enough. Some old programs + page thinking and working methods will still become the dominant part of our daily work. Our current UI is still far from being superficial in the superficial stage. . What

2025-02-21
Discussion on the distribution of visual focus in horizontal direction in web design

The user's vertical attention distribution of the web page is relatively simple: the first half of the information entering people's field of vision is more information hidden than the following part. Now, let’s take a look at the user’s attention

2025-02-21
Explanation of Factory Pattern Examples of JavaScript Design Patterns

The original method of javaScript factory method is because the properties of the object can be dynamically defined after the object is created. When JavaScript was first introduced, code similar to the following would be written. Copy the code as follows

2025-02-21
Use try-catch to determine whether the variable has been declared undeclared or not assigned

The purpose is that if a variable is declared and has not been assigned, it can be assigned directly; and the scope of the variable cannot be changed. If it is not declared, it will be re-declared. I searched online. The common method is if(typeof(a)== &#

2025-02-21
HTML5 canvas simply encapsulates a pie chart that echarts cannot implement

It means that I have been using echarts for a long time. If a pie chart with the style shown above appears, it is difficult for me to use echarts. The official document does not have a pie chart in this mode. I tried using d3 and canvas to draw pie charts

2025-02-21
Discuss the similarities and differences between the three ways of declaring global variables in JavaScript

Variables and variable declarations are the most basic concepts of a language, and beginners will quickly master them. The same is true for declaring variables in JavaScript, it is very simple var (keyword) + variable name (identifier). Method 1var test;v

2025-02-21
The high -level text is perpendicular to the implementation method in the div

When I was interviewed, I was asked: How to make a section of an uncertain -high text vertically in the middle? Let's summarize now: Write the structure in body<div id=main><div id=login> djshdk aWJDSD SEDE SFCDF VDJ SH D

2025-02-21
Javasipt: Detailed explanation of operating radio tags

1. HTML code: Copy the code as follows:<form action="#" name="userOpinionForm" id="userOpinionForm" method="post">

2025-02-21
This examples in JavaScript for detailed learning and working principles

This's working principle If a function is called as an object method, this will be assigned to this object. Copy code code as follows: var Parent = {Method: function () {console.log (this);}}; Parent.Meth

2025-02-21
JavaScript floating -point number multiplication calculation The solution to multiple decimal digits appears

JavaScript has multiple decimal conditions at the multiplication operation of floating -point numbers. This is because the floating point number is converted into binary after the operation, but some decimals have infinite circulation after binary coding,

2025-02-21
Pure HTML5+CSS3 Making Birthday Cake (Code is easy to understand)

Not much nonsense, first show you the effect map: the cake is divided into three parts, the bottom cake, the top cake and the candle part. The layout of HTML is also layout according to these three parts. The other is the use of CSS positioning and CSS3 R

2025-02-21

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