JS CSS implements sliding switching tab menu effect_javascript skills
The example in this article describes how to implement the sliding switching tab menu effect with JS CSS. Share it with everyone for your reference. The details are as follows:
This is a simple JS CSS sliding door special effect code. When the mouse slides over the menu, the secondary menu automatically switches, and the mouse does not need to be clicked. The sliding door effect is a relatively popular web menu effect, which is often used on the Internet. You can see this kind of menu. This menu has been tested under Firefox, IE8, and Chrome. The code compatibility is acceptable. You can use it to beautify the style for your own use.
The screenshot of the running effect is as follows:
The online demo address is as follows:
http://demo.jb51.net/js/2015/js-css-move-cha-tab-menu-style-codes/
The specific code is as follows:
<!doctype html> <html xmlns="http://www.w3.org/1999/xhtml" xmlns:xlink="http://www.w3.org/1999/xlink" lang="zh_CN" xml:lang="zh_CN"> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <script type="text/javascript"> var $=function(a,b){ var ID = document.getElementById(a); var OBJ= (b)?ID.getElementsByTagName(b):ID; return OBJ } var n=0; var tab = function(MENU,BODY){ var l = MENU.length; for(var i=0;i<l;i++){ MENU[i].onmouseover=function(a){ return function(){ MENU[n].className="label" BODY[n].style.display = "none"; MENU[a].className="label label-selected"; BODY[a].style.display = "block"; n=a; } }(i); } } </script> <style> body{font-family: "微软雅黑","SimSun","宋体","Arial Narrow";} #header,#main,#footer{width: 1050px;background: #F1F9D9;margin: 5px auto;} #header{height: 50px;} #main{height: auto;} #footer{height: 50px;} #menu{height: 36px;padding: 2px 0 0 0;} li{list-style: none;cursor: pointer;} .category{margin: 0;height: 35px;border-bottom: 1px solid #b5e2f3;text-align: center;} .label{border: 1px solid #b5e2f3;float: left;width: 100px;height: 25px;margin: 0 3px;background: #F1FEF3;padding: 9px 0 0 0;outline: 0;-moz-border-radius: 5px 5px 0 0;} .label-selected{background: #FFF;border-bottom: 1px solid #FFF;} #linksContent{margin-top: -1;height: 600px;padding: 10px;border: 1px solid #b5e2f3;border-top: 0;background: #FFF;} .link{float: left;width: 180px;display: block;margin: 10px 0;} </style> <title>myLinks</title> </head> <body> <div id="container"> <div id="header"></div> <div id="main"> <div id="menu"> <ul class="category"> <li class="label label-selected">在线学习</li> <li class="label">运动休闲</li> <li class="label">编程社区</li> <li class="label">文化娱乐</li> <li class="label">休息项目</li> <li class="label">人际往来</li> </ul> </div> <div id="linksContent"> <div class="category-1" style="display:block;"> <ul> <li class="link"><span>html学习</span></li> <li class="link"><span>编译原理</span></li> <li class="link"><span>人工智能</span></li> <li class="link"><span>算法设计</span></li> </ul> </div> <div class="category-2" style="display:none;"> <ul> <li class="link"><span>开车</span></li> <li class="link"><span>郊游</span></li> <li class="link"><span>音乐</span></li> </ul> </div> <div class="category-2" style="display:none;"> <ul> <li class="link"><span>MSDN</span></li> <li class="link"><span>编译原理</span></li> <li class="link"><span>科幻电影</span></li> <li class="link"><span>技术文档</span></li> </ul> </div> <div class="category-2" style="display:none;"> <ul> <li class="link"><span>java学习</span></li> <li class="link"><span>html学习</span></li> <li class="link"><span>编译原理</span></li> <li class="link"><span>人工智能</span></li> <li class="link"><span>算法设计</span></li> </ul> </div> <div class="category-2" style="display:none;"> <ul> <li class="link"><span>html学习</span></li> <li class="link"><span>编译原理</span></li> <li class="link"><span>人工智能</span></li> </ul> </div> <div class="category-2" style="display:none;"> <ul> <li class="link"><span>java学习</span></li> <li class="link"><span>html学习</span></li> <li class="link"><span>算法设计</span></li> </ul> </div> </div> </div> <div id="footer"></div> </div> <script> tab($("menu","li"),$("linksContent","div")); </script> </body> </html>
I hope this article will be helpful to everyone’s JavaScript programming design.

JavaScript is widely used in websites, mobile applications, desktop applications and server-side programming. 1) In website development, JavaScript operates DOM together with HTML and CSS to achieve dynamic effects and supports frameworks such as jQuery and React. 2) Through ReactNative and Ionic, JavaScript is used to develop cross-platform mobile applications. 3) The Electron framework enables JavaScript to build desktop applications. 4) Node.js allows JavaScript to run on the server side and supports high concurrent requests.

Python is more suitable for data science and automation, while JavaScript is more suitable for front-end and full-stack development. 1. Python performs well in data science and machine learning, using libraries such as NumPy and Pandas for data processing and modeling. 2. Python is concise and efficient in automation and scripting. 3. JavaScript is indispensable in front-end development and is used to build dynamic web pages and single-page applications. 4. JavaScript plays a role in back-end development through Node.js and supports full-stack development.

C and C play a vital role in the JavaScript engine, mainly used to implement interpreters and JIT compilers. 1) C is used to parse JavaScript source code and generate an abstract syntax tree. 2) C is responsible for generating and executing bytecode. 3) C implements the JIT compiler, optimizes and compiles hot-spot code at runtime, and significantly improves the execution efficiency of JavaScript.

JavaScript's application in the real world includes front-end and back-end development. 1) Display front-end applications by building a TODO list application, involving DOM operations and event processing. 2) Build RESTfulAPI through Node.js and Express to demonstrate back-end applications.

The main uses of JavaScript in web development include client interaction, form verification and asynchronous communication. 1) Dynamic content update and user interaction through DOM operations; 2) Client verification is carried out before the user submits data to improve the user experience; 3) Refreshless communication with the server is achieved through AJAX technology.

Understanding how JavaScript engine works internally is important to developers because it helps write more efficient code and understand performance bottlenecks and optimization strategies. 1) The engine's workflow includes three stages: parsing, compiling and execution; 2) During the execution process, the engine will perform dynamic optimization, such as inline cache and hidden classes; 3) Best practices include avoiding global variables, optimizing loops, using const and lets, and avoiding excessive use of closures.

Python is more suitable for beginners, with a smooth learning curve and concise syntax; JavaScript is suitable for front-end development, with a steep learning curve and flexible syntax. 1. Python syntax is intuitive and suitable for data science and back-end development. 2. JavaScript is flexible and widely used in front-end and server-side programming.

Python and JavaScript have their own advantages and disadvantages in terms of community, libraries and resources. 1) The Python community is friendly and suitable for beginners, but the front-end development resources are not as rich as JavaScript. 2) Python is powerful in data science and machine learning libraries, while JavaScript is better in front-end development libraries and frameworks. 3) Both have rich learning resources, but Python is suitable for starting with official documents, while JavaScript is better with MDNWebDocs. The choice should be based on project needs and personal interests.


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