1. 程式人生 > >使用zindex屬性讓控制元件顯示在最上層

使用zindex屬性讓控制元件顯示在最上層

設定示例:

<div id="a1" style="position:absolute;left:100px;top:100px;width:100px;height:100px;
background-color:#ddeeff;z-index:1">div>
<div id="a2" style="position:absolute;left:150px;top:130px;width:100px;height:100px;
background-color:#eeffdd;z-index:2">div>
<div id="a3" style="position:absolute;left:200px;top:160px;width:100px;height:100px;
background-color:#ffddee;z-index:3"
>div>

DEMO:

<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>
原文連結: http://hi.baidu.com/j_z_/blog/item/458dd81b98821dd0ac6e756a.html