js选中当前菜单后高亮显示的导航条

时间：2024-08-09 23:04:32
<!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 charset="utf-8">

<title>js选中当前菜单后高亮</title>

<style type="text/css">

.nav {

    MARGIN: 1px ;

    WIDTH: 100%;

    FONT-FAMILY: verdana;

    HEIGHT: 21px;

    BACKGROUND-COLOR: #970B0B;

    font-family:Arial, Helvetica, sans-serif;

    font-size:12px;

}

.nav UL {

    PADDING: 0px;

    DISPLAY: block;

    MARGIN: 0px;

    LIST-STYLE-TYPE: none;

    HEIGHT: 21px;

    BACKGROUND-COLOR: #970B0B;

    COLOR: #ffffff;

}

.nav LI {

    BORDER-RIGHT: #ffffff 1px solid;

    DISPLAY: block;

    FLOAT: left;

    HEIGHT: 21px;

    font-family:Arial, Helvetica, sans-serif;

    font-size:12px;

}

.nav LI A {

    PADDING:1px 15px ;

    DISPLAY: block;

    FONT-WEIGHT: none;

    COLOR: #ffffff;

    LINE-HEIGHT: 20px;

    TEXT-DECORATION: none;

}

.nav LI A:hover {

    COLOR:#;

    BACKGROUND-COLOR: #f4f524;

    TEXT-DECORATION: none;

}

.current{

  color:#ffffff;

  background:blue;

}

.nav li#date{

  color:#ffffff;

  PADDING:2px 15px ;

}

</style>

<script language="javascript" type="text/javascript">

var  $c=function(array){var nArray = [];for (var i=;i<array.length;i++) nArray.push(array[i]);return nArray;};

Array.prototype.each=function(func){

for(var i=,l=this.length;i<l;i++) {func(this[i],i);};

};

document .getElementsByClassName=function(cn){

var hasClass=function(w,Name){

var hasClass = false;

w.className.split(' ').each(function(s){

if (s == Name) hasClass = true;

});

return hasClass;

};

var elems =document.getElementsByTagName("*")||document.all;

            var elemList = [];

           $c(elems).each(function(e){

if(hasClass(e,cn)){elemList.push(e);}

           })

        return $c(elemList);

};

function change_bg(obj){

var a=document.getElementsByClassName("nav")[].getElementsByTagName("a");

for(var i=;i<a.length;i++){a[i].className="";}

obj.className="current";

}

</script>

</head>

<body>

<DIV class="nav">

  <UL>

    <LI><A href="#" onclick="change_bg(this)">源码首页</A></LI>

    <LI><A href="#" onclick="change_bg(this)">网页特效</A> </LI>

    <LI><a href="#" class="current" onclick="change_bg(this)">精品源码</a> </LI>

    <LI><A href="#" onclick="change_bg(this)">ASP源码</A> </LI>

    <LI><A href="#" onclick="change_bg(this)">PHP源码</A> </LI>

    <LI><A href="#" onclick="change_bg(this)">JSP源码</A> </LI>

    <LI><A href="#" onclick="change_bg(this)">脚本资源</A> </LI>

    <LI><A href="#" onclick="change_bg(this)">软件下载</A> </LI>

  </UL>

</DIV>

</body>

</html>

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