Home > Developer > JavaScript

Javascript oop development slide Menu Control

Source: Internet
Author: User
Developer on Alibaba Coud: Build your first app with APIs, SDKs, and tutorials on the Alibaba Cloud. Read more ＞

Here, we use native javascript to create an easy-to-maintain and easy-to-use sliding menu in an object-oriented way. The Calling method is as follows:
Copy codeThe Code is as follows:
Var $ sliding = document. getElementById ("silding ");
Var s1 = new Sliding ();
S1.commands = $ sliding. getElementsByTagName ("dt ");
S1.panels = $ sliding. getElementsByTagName ("dd ");;
S1.init ("mouseover", "active ");

The Demo code is divided into two files: slide.js and slide.html.
Slide.htm:
Copy codeThe Code is as follows:
<! DOCTYPE html PUBLIC "-// W3C // dtd xhtml 1.0 Transitional // EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<Html xmlns = "http://www.w3.org/1999/xhtml">
<Head>
<Meta http-equiv = "Content-Type" content = "text/html; charset = UTF-8"/>
<Title> javascript slide control demonstration </title>
<Style type = "text/css">
/* Reset */
Dl, ul, li, dt, dd {margin: 0; padding: 0; list-style: none ;}
/* Silding */
. Silding {width: 200px; border: 1px solid # ccc; line-height: 25px; overflow: hidden ;}
. Silding dt {border-bottom: 1px solid # ccc; background-color: # bebebe; cursor: pointer}
. Silding dd {display: none; background: # efefef; overflow: hidden; font-size: 12px ;}
. Silding. active {font-weight: bold ;}
</Style>
<Script type = "text/javascript" src = "slide. js"> </script>
</Head>
<Body>
<Div id = "silding" class = "silding">
<Dl>
<Dt class = "active"> first level menu </dt>
<Dd style = "display: block;">
<Ul>
<Li> <a href = "#"> first level-2 menu </a> </li>
<Li> first level-2 menu </li>
<Li> first level-2 menu </li>
</Ul>
</Dd>
</Dl>
<Dl>
<Dt> second level-1 menu </dt>
<Dd>
<Ul>
<Li> Second Level-2 menu </li>
<Li> Second Level-2 menu </li>
<Li> Second Level-2 menu </li>
</Ul>
</Dd>
</Dl>
<Dl>
<Dt> third level-1 menu </dt>
<Dd>
<Ul>
<Li> third level-2 menu </li>
<Li> third level-2 menu </li>
<Li> third level-2 menu </li>
</Ul>
</Dd>
</Dl>
</Div>
<Script type = "text/javascript">
Var $ sliding = document. getElementById ("silding ");
Var s1 = new Sliding ();
S1.commands = $ sliding. getElementsByTagName ("dt ");
S1.panels = $ sliding. getElementsByTagName ("dd ");;
S1.init ("mouseover", "active ");
</Script>
</Body>
</Html>

Slide. js:
Copy codeThe Code is as follows:
Function Slider (I, panelHeight) {// dto
This. index = I;
This. panelHeight = panelHeight;
}
// Class Sliding {
Function Sliding (activeIndex ){
This. commands = [];
This. panels = [];
This. activeIndex = activeIndex | 0;
This. sliderCache = {};
}
Sliding. prototype = {
// Bind events
Init: function (eventName, activeCssClass ){
Var _ this = this;
Var cmds = _ this. commands;
_ This. activeClass = activeCssClass;
For (var I = 0, n = cmds. length; I <n; I ++ ){
Cmds [I] ["on" + eventName] = function (e ){
_ This. handel (this, e );
}
Cmds [I]. index = I;
If (I = _ this. activeIndex ){
_ This. sliderCache = new Slider (I, _ this. panels [I]. offsetHeight );
}
}
},
// Event processing functions
Handel: function (elem, args ){
Var _ this = this;
Var index = elem. index;
Var cacheIndex = _ this. sliderCache. index;
Var cacheElem = _ this. commands [cacheIndex];
If (index = cacheIndex) return;
Var showPanel = _ this. panels [index];
Var hidePanel = _ this. panels [cacheIndex];
Var h = parseInt (_ this. sliderCache. panelHeight );
ShowPanel. style. height = "0px ";
ShowPanel. style. display = "block ";
_ This. tween (hidePanel, showPanel, h );
Elem. className = _ this. activeClass;
CacheElem. className = cacheElem. className. replace (eval ("/? "+ _ This. activeClass + "? /"),"");
_ This. sliderCache = new Slider (index, h );
},
// Animation algorithm
Tween: function (obj0, obj1, h ){
_ This = arguments. callee;
Var step = 20;
If ("\ v" = "v "){
Step = 30;
}
If (h> 0 ){
Var h0 = obj0.offsetHeight;
Var h1 = obj1.offsetHeight;
If (h <step ){
Obj0.style. display = "none ";
Obj0.style. height = (h1 + h) + "px ";
Obj1.style. height = (h1 + h) + "px ";
} Else {
H = h-step;
Obj0.style. height = (h0-step) + "px ";
Obj1.style. height = (h1 + step) + "px ";
SetTimeout (function (){
_ This (obj0, obj1, h)
},
50)
}
}
}
}
//}

All the above Code is shown here, because it is a demonstration, html css is simplified as much as possible. In addition, the fn of jquery is used. slideUp fn. slideDown is easier to implement, but as a professional developer, I am very helpful to learn more about native JS.

This article is an English version of an article which is originally in the Chinese language on aliyun.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to info-contact@alibabacloud.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

Related Keywords:
menu item visibility control javascript menu builder web development version control javascript development ide javascript development environment ide for javascript development oop
Related Article
JavaScript solution to the eight Queens Problem method summar...
The difference between single and double quotes in JavaScript...
Http status code: 301, 302 redirection, 302 redirection
The html space symbol nbsp; ensp; emsp; introduces and implem...
Ajax and 302 response code test_javascript-js tutorial

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

What's Trending
Top 10 Tags
datastax versions naming convention zookeeper client class definition md5 microsoft sql server 2005 data structures exception handling error handling
Top 10 Keywords
microsoft download center down wordpress address url site address url wordpress address url windows installer 4 0 download 302 not found web address url definition site address url wordpress db2 integer mac os installation step by step pdf abbreviation for return

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

Get Started for Free

  • Sales Support

    1 on 1 presale consultation

    Chat Contact Sales

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

    Open a Ticket

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.

    Learn More