javascript简单实现滑动菜单效果的方法
本文实例讲述了javascript简单实现滑动菜单效果的方法。分享给大家供大家参考。具体如下：
整个javascript代码共42行，其中主要函数Slide代码26行,可以改进哦！
<!DOCTYPEhtmlPUBLIC"-//W3C//DTDXHTML1.0Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<htmlxmlns="http://www.w3.org/1999/xhtml">
<head>
<metahttp-equiv="Content-Type"content="text/html;charset=utf-8"/>
<title>滑动菜单</title>
<style>
a,body,div,h1,h2,li,ul{
margin:0;
padding:0
}
a{display:block;text-decoration:none;height:25px;color:#456;background-color:#ABC;cursor:pointer;}
a:hover{color:#123;background-color:#789;font-weight:bold;}
body{
font:12px/18px"TimesNewRoman",Times,"宋体",serif;
text-align:center;
}
h1{
height:100px;
width:25px;
position:absolute;
top:-1px;
left:123px;
cursor:pointer;
color:#89A;
font-size:18px;
line-height:50px;
background-color:#234;
}
h2{
height:24px;
font-size:12px;
border-bottom:1pxsolid#4C6CB9;
color:#BBB;
font-weight:600;
cursor:pointer;
}
li{height:25px;list-style:none}
#Container{width:800px;background-color:#DDD;border:1pxsolid#999;margin:10pxauto}
#Top{height:30px;background-color:#DDD;border:1pxsolid#999;}
#Logo{height:100px;background-color:#DDD;border:1pxsolid#999;}
#Nav{height:30px;background-color:#DDD;border:1pxsolid#999;}
#SideBar{
position:fixed!important;
position:absolute;
top:200px;
left:0px;
}
#SideBara,#SideBarh2,#SideBarli,#SideBarul{width:120px}
#Main{height:800px;background-color:#DDD;border:1pxsolid#999;}
#Footer{height:60px;background-color:#DDD;border:1pxsolid#999;}
.Extracted{width:0px;}
.Extrended{border:1pxsolid#555;background-color:#000;padding:1px}
</style>
</head>
<body>
<divid="Container">
<divid="Top">顶条</div>
<divid="Logo">Logo</div>
<divid="Nav">导航条</div>
<divid="SideBar"class="Extrended">
<h1>菜单</h1>
<ul>
<h2>功能栏1</h2>
<li><ahref="">功能1</a></li>
<li><ahref="">功能2</a></li>
<li><ahref="">功能3</a></li>
<li><ahref="">功能4</a></li>
<li><ahref="">功能5</a></li>
</ul>
<ul>
<h2>功能栏2</h2>
<li><ahref="">功能1</a></li>
<li><ahref="">功能2</a></li>
<li><ahref="">功能3</a></li>
<li><ahref="">功能4</a></li>
<li><ahref="">功能5</a></li>
</ul>
<ul>
<h2>功能栏3</h2>
<li><ahref="">功能1</a></li>
<li><ahref="">功能2</a></li>
<li><ahref="">功能3</a></li>
<li><ahref="">功能4</a></li>
<li><ahref="">功能5</a></li>
</ul>
<ul>
<h2>功能栏4</h2>
<li><ahref="">功能1</a></li>
<li><ahref="">功能2</a></li>
<li><ahref="">功能3</a></li>
<li><ahref="">功能4</a></li>
<li><ahref="">功能5</a></li>
</ul>
<ul>
<h2>功能栏5</h2>
<li><ahref="">功能1</a></li>
<li><ahref="">功能2</a></li>
<li><ahref="">功能3</a></li>
<li><ahref="">功能4</a></li>
<li><ahref="">功能5</a></li>
</ul>
<ul>
<h2>功能栏6</h2>
<li><ahref="">功能1</a></li>
<li><ahref="">功能2</a></li>
<li><ahref="">功能3</a></li>
<li><ahref="">功能4</a></li>
<li><ahref="">功能5</a></li>
</ul>
</div>
<divid="Main">内容区</div>
<divid="Footer">底条</div>
</div>
<scripttype="text/javascript">
function$(e){returndocument.getElementById(e)}
functionSlide(Element,Mod){
varLongthMax,LongthMin,Property,Count=25,Accum,ID,Dlt,DltDlt;
if(Mod){
Property='left';
LongthMax=0;
LongthMin=-124;
}
else{
Property='height';
LongthMax=Element.children.length*25;
LongthMin=25;
}
DltDlt=(LongthMax-LongthMin)/(Count*5);
if(Element.style[Property]==LongthMax+'px')DltDlt=-DltDlt;
Accum=parseInt(Element.style[Property]);
Dlt=7*DltDlt;
ID=setInterval(function(){
if(Count--){
if(!(Count%5))Dlt-=DltDlt;
Accum+=Dlt;
Element.style[Property]=Math.floor(Accum)+'px';
return
}
clearInterval(ID);
Element.style[Property]=(DltDlt>0)?LongthMax+'px':LongthMin+'px';
},20);
}
$('SideBar').style.left='0px';
$('SideBar').children[0].onclick=function(){
Slide(this.parentNode,1);
};
(function(Menu,i,tmp){
Menu=document.getElementsByTagName('ul');
for(i=Menu.length;i--;){
tmp=Menu[i];
tmp.style.overflow='hidden';
tmp.style.height='25px';
tmp.children[0].onclick=function(){
Slide(this.parentNode,0);
};
}
}());
</script>
</body>
</html>
希望本文所述对大家的javascript程序设计有所帮助。