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Web design tutorial

Simple example code for imitating Baidu skin replacing function

Effect: (Skin the div, select the image you want, as the web background, save) Key points: Cookie save status html code:<body><div id="header"><div id="header_con"><div>

2025-07-13
A deep understanding of JavaScript DOM objects

What is DOM? DOM is a document object model (Document Object Model) API interface based on browser programming (in this tutorial, it can be said to be DHTML programming). The recommended standards issued by W3C, each browser has some subtle differences, a

2025-07-13
Detailed explanation of Bootstrap Scrollspy plug-in

The scroll monitoring (Scrollspy) plug-in, that is, the automatic update of the navigation plug-in, will automatically update the corresponding navigation target according to the position of the scroll bar. Its basic implementation is to add .active class

2025-07-13
JavaScript realizes the switching effect of Tab tags in different colors

This article shares the implementation code of the Tab tag switching effect of different colors in JavaScript for your reference. The specific content is as follows:<html><head><title> Different color tabs</title>

2025-07-13
Use the do...while method to enter all Sundays of a month (instance code)

Use the do...while method to enter all Sundays of a month (instance code) do{ var date = Number(prompt('Please enter the total number of days in a month')); var start = (prompt('Please enter the day of the first day of a month')); fo

2025-07-13
JavaScript combined with Bootstrap imitates WeChat backend multi-graphic interface management

JS imitates the multi-graphic interface of WeChat backend management, and integrates ajax plug-in for asynchronous upload of files for your reference. The specific content is as follows: Detailed code: html:<div id="wrap"><div id="sidebar"><div>

2025-07-13
Share two simple JS code to prevent SQL injection

1. URL address anti-injection://filter URL illegal SQL characters var sUrl=location.search.toLowerCase(); var sQuery=sUrl.substring(sUrl.indexOf("=")+1); re=/se

2025-07-13
A brief analysis of undefined and null in Javascript type system

In the previous general programming language, only null is empty, but JavaScript designer Brendan Eich designed an undefined, which undoubtedly increases the complexity of the program, but there is a certain reason for doing so. This article will introduc

2025-07-13
A brief analysis of JS asynchronous loading progress bar

Show effect: 1) When clicking Load, simulate asynchronous loading. The browser is blocked. The progress bar appears. Implementation idea: 1. When the user clicks on the load button to execute asynchronous request. The load bar appears when the call method

2025-07-13
Implement image carousel based on javascript array

There are many ways to carousel the picture. Here is a simple one: js array implementation. First store the image path in the array, and then call the setInterval function to carousel the image in turn<script type="text/javascript"> var curIndex = 0;

2025-07-13
Based on Bootstrap, the Material Design-style form plug-in is implemented with source code download

Jquery Material Form Plugin is a Material Design-style jQuery form plugin based on Bootstrap. This form changes Bootstrap's form to a flat-style form through custom style and jQuery with floating tags

2025-07-13
Easyi Treegrid's method to change the default icon

In general, the treegrid icon is the default folder and file form, as shown in the figure below: We can add iconCls to the json text to change the default icon, for example: {"total":7,"rows":[{"id":1,"name":"A

2025-07-13
Prototype analysis in javascript [Recommended]

Recently, when I was learning JavaScript and learning the prototype of js object-oriented, I have a lot of insights. If there is something wrong, I hope it can be corrected. As an object-oriented language, js naturally has the concept of inheritance, but

2025-07-13
JavaScript detects original values, reference values, and attributes

In JavaScript, we often see code like this: a comparison of variables to null (this usage is very problematic), used to determine whether a variable is given a reasonable value. For example: var Controller = {process: function(items) {if

2025-07-13
Bootstrap component series welfare chapter several useful components (recommended 2)

In the previous article, I introduced several useful components in the Bootstrap component series (recommended). Next, this article introduces several useful components in the Bootstrap component series (recommended 2). Interested friends will learn toget

2025-07-12

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