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CSS+HTML+JS implementing Multi-level drop-down and popup menus

Source: Internet
Author: User
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This article uses CSS+HTML+JS to implement a landscape menu. has a multi-level pop-up menu drop-down.

First, let's take a look:



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You should first write the HTML part of the code, the code is relatively simple, code such as the following:

<body> <div id= "menu" > <ul> <li><a href= "#" id= "current" > Home </a>< /li> <li><a href= "#" > Page layout </a> <ul> <li><a href= "#" > Adaptive width </a></li> <li><a href= "#" > Fixed width </a></li> </ul> </li > <li><a href= "#" >web tutorials </a> <ul> <li><a href= "#" , beginner </a></li> <li><a href= "#" > Video Tutorials </a></li> <li><a HRE f= "#" > FAQs </a></li> </ul> </li> <li><a href= "#" >web Real                Example </a></li> <li><a href= "#" > Frequently used code </a></li> </ul> </div> <div id= "S1" > <ul> <li><a href= "#" > Software project</a> <ul&            Gt <li> <a href= "#" >java ee</a></li> <li><a href= "#" >c</a></li> &L            t;/ul> </li> <li><a href= "#" > Program language </a> <ul>           <li><a href= "#" >android</a></li> <li><a href= "#" >java</a></li> </ul> </li> </ul> </div> </body>



Then write the CSS code, the code has a gaze, easy to read and understand:

<style type= "Text/css" >body {font-family:verdana;/* font */font-size:12px;/* Font size */line-height:1.5;/* Row height */} A {color: #000;/* color when normal */text-decoration:none;//* a:hover {color: #F00;/* The color displayed when the mouse passes through */} #m ENU {width:500px;/* div width */height:28px;/* Height */margin:0 auto;/* Horizontal Center */border-bottom:3px solid #E10001;/* Set Bottom  The tip */} #menu ul {list-style:none;/* Cancel list style */margin:0px;/* margin is 0 */padding:0px;/* padding is 0 */} #menu UL   Li {float:left;/* Horizontal float */margin-left:2px;/* left margin is 2px */} #menu ul li a {display:block;   width:87px;   height:28px;   line-height:28px;   Text-align:center;  Background:url (./m14.jpg) 0 0 no-repeat;  font-size:14px;  } #menu ul li a:hover {background:url (./m13.jpg) 0 0 no-repeat;   } #menu ul Li a#current {background:url (./m12.jpg) 0 0 no-repeat;   Font-weight:bold;  Color: #fff;   } #menu ul Li ul {border:1px solid #ccc;   Display:none;  Position:absolute; } #menu ul Li ul li{float:none;   width:87px;   Background: #eee;  margin:0;  } #menu ul Li ul li a {background:none;   } #menu ul Li ul li a:hover {background: #333;  Color: #fff;  } #menu UL Li:hover ul {display:block;  } #menu UL Li.sfhover ul {display:block;   } #s1 {background-color:pink;   width:180px;   BORDER:2PX solid red;   position:relative;   left:200px;   top:190px; height:60px;}  #s1 ul li{List-style-type:none;  height:25px;  width:50px;  Background-color: #0ff;  Float:left; margin:10px;}  #s1 ul Li ul{display:none; Position:absolute;}    #s1 ul li:hover ul{Display:block;    Background-color:blue;    margin:0px;    padding:0px; /* width:100px;  */} #s1 UL Li.sfhover ul {display:block;  margin:0px;  padding:0px;   } #s1 ul Li ul li{border:1px solid red;   Float:none;   margin:0px;   width:50px; } </style>

After the above steps can be tested, you will find that the above code only in Google Browser can operate normally. Ability to implement drop-down menus. However, in IE and other browsers, can not use the drop-down menu, browser incompatibility caused by, so in order to write a compatible full browser menu, but also need to control the JS code. JS code such as the following; 

<script type= "Text/javascript" > Function Menufix () {var sfels = document.getElementById ("menu"). Getelementsby      TagName ("Li");      var sfEls2 = document.getElementById ("S1"). getElementsByTagName ("Li"); for (var i=0; i<sfels.length; i++) {sfels[i].onmouseover=function () {this.classname+= (this.classn Ame.length>0?       "": "") + "Sfhover";           }; Sfels[i].onmousedown=function () {this.classname+= (this.classname.length>0?)
"": "") + "Sfhover";          }; Sfels[i].onmouseup=function () {this.classname+= (this.classname.length>0?)        "": "") + "Sfhover";        }; Sfels[i].onmouseout=function () {This.classname=this.classname.replace (new RegExp (? |          ^) (sfhover\\b ")," ");          };           } for (var i=0; i<sfels2.length; i++) {sfels2[i].onmouseover=function () { this.classname+= (this.classname.length>0?
"": "") + "Sfhover";           }; Sfels2[i].onmousedown=function () {this.classname+= (this.classname.length>0?)
"": "") + "Sfhover";          }; Sfels2[i].onmouseup=function () {this.classname+= (this.classname.length>0?)
"": "") + "Sfhover";        }; Sfels2[i].onmouseout=function () {This.classname=this.classname.replace (new RegExp (? |          ^) (sfhover\\b ")," ");          }; }}window.onload=menufix;</script>


Now be able to perform normal, will appear this article began to show the effect, because it is a test, so some CSS code is not removed, mainly to facilitate debugging



















































































CSS+HTML+JS implementing Multi-level drop-down and popup menus

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:
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