javascript控制层显示或隐藏的方法

本文实例讲述了javascript控制层显示或隐藏的方法。分享给大家供大家参考。具体实现方法如下：

<html>

<head>

<title>中国风</title>

<meta http-equiv="Content-Type" content="text/html; charset=gb2312">

</head>

<script language="JavaScript">

function showLay1(){

lay1.style.visibility="visible";

lay2.style.visibility="hidden";

lay3.style.visibility="hidden";

}

function showLay2(){

lay1.style.visibility="visible";

lay2.style.visibility="visible";

lay3.style.visibility="hidden";

}

function showLay3(){

lay1.style.visibility="visible";

lay2.style.visibility="visible";

lay3.style.visibility="visible";

}

</script>

<body>

<div id="lay1" style="position:absolute; left:60px; top:30px; width:250px; height:200px; index:1; visibility:visible">这是第一层内容,它的背景是透明的</div>

<div id="lay2" style="position:absolute; left:60px; top:30px; width:250px; height:200px; index:2; visibility:hidden; background-color:silver">这是第二层内容,它的背景是灰色的</div>

<div id="lay3" style="position:absolute; left:60px; top:30px; width:250px; height:200px; index:3; visibility:hidden"><br><br><br>这是第三层内容,它的背景是透明的</div>

<form id="form1" style="position:absolute; left:70px; top:250px;">

<input type="button" value="第一层" onclick="showLay1()">

<input type="button" value="第二层" onclick="showLay2()">

<input type="button" value="第三层" onclick="showLay3()">

</form>

</body>

</html>

希望本文所述对大家的javascript程序设计有所帮助。