js导航栏单击事件背景变换示例代码

时间:2020-05-13 人气:0

如下所示;

<!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>无标题文档</title>
<script type="text/javascript">
function change_bg(obj)
{
    var a=document.getElementById("Menu").getElementsByTagName("a");
    for(var i=0;i<a.length;i++)
    {
        a[i].className="";
    }
    obj.className="current";
}
</script>
<style type="text/css">
body{
    font-size:17px;
}
.current{
    background:red;
}
#container ul
{
    list-style-type:none;
}
#container ul li
{
    float:left;
    margin-right:3px;
}
#container ul li a{
text-decoration:none;
color:#000;

}
</style>
</head>
<body>
<div id="container">
<ul id="Menu">
<li><a href="javascript:" onclick="change_bg(this)" class="current">Menu1</a></li>
<li><a href="javascript:" onclick="change_bg(this)">Menu2</a></li>
<li><a href="javascript:" onclick="change_bg(this)">Menu3</a></li>
<li><a href="javascript:" onclick="change_bg(this)">Menu4</a></li>
<li><a href="javascript:" onclick="change_bg(this)">Menu5</a></li>
</ul>
</div>
</body>
</html>

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