Posted on 2012-04-01 13:13
圣騎士武 閱讀(259)
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點擊div使之顯示在最上層
方法一
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title></title>
</head>
<body>
<div id="aaa" style="position:absolute;left:100px;top:100px;width:100px;height:100px;background-color:#ddeeff;z-index:1;"
onclick="moveUp(this.id)" ></div>
<div id="bbb" style="position:absolute;left:150px;top:130px;width:100px;height:100px;background-color:#eeffdd;z-index:2;" onclick="moveUp(this.id)"></div>
<div id="ccc" style="position:absolute;left:200px;top:160px;width:100px;height:100px;background-color:#ffddee;z-index:3;" onclick="moveUp(this.id)"></div>
<script type="text/javascript">
var divNo = document.getElementsByTagName("div").length;
//alert(divNo);
function moveUp(id)
{
divNo++;
var box = document.getElementById(id);
box.style.zIndex=divNo;
}
</script>
</body>
</html>
方法二
<!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=gb2312" />
<title></title>
<script type="text/javascript">
function $(obj){
return document.getElementById(obj);
}
function change(n){
for (var i=1;i<4;i++){
if(n==i){
$("a"+i).style.zIndex="100";
}else{
$("a"+i).style.zIndex="0";
}
}
}
</script>
</head>
<body>
<div id="a1" style="position:absolute;left:100px;top:100px;width:100px;height:100px;background-color:#ddeeff;z-index:1" onclick="change('1')" ></div>
<div id="a2" style="position:absolute;left:150px;top:130px;width:100px;height:100px;background-color:#eeffdd;z-index:2" onclick="change('2')"></div>
<div id="a3" style="position:absolute;left:200px;top:160px;width:100px;height:100px;background-color:#ffddee;z-index:3" onclick="change('3')"></div>
</body>
</html>