javascript彈出層執行個體代碼

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javascript彈出層執行個體代碼

 <!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>彈窗</title>

<style type="text/css">

body{margin:0;padding:0;}

#bg{background:#000;position:absolute;left:0;top:0;filter:"Alpha(opacity=20)";opacity:0.2;display:none;}

#win{width:200px;height:200px;position:absolute;left:50%;top:50%;margin:-100px -100px 0;border:4px #F00 solid;background:#FFF;display:none;}

</style>

</head>

 

<body>

<a href="javascript:;" onclick="WinTip()">彈出</a>

<div id="bg"></div>

<div id="win"><a href="javascript:;" onclick="WinTip()">關閉</a></div>

</body>

<script type="application/javascript">

var $=function(id){return document.getElementById(id);}

function WinTip(){

var win=new WinSize();

var Tip=$("bg");

Tip.style.width=win.W+"px";

Tip.style.height=win.H+"px";

if(Tip.style.display=="block"){

Tip.style.display="none";

$("win").style.display="none";

}else{

Tip.style.display="block";

$("win").style.display="block";

}

}

function WinSize() //函數:擷取尺寸

{

var winWidth = 0;

var winHeight = 0;

if (window.innerWidth)

winWidth = window.innerWidth;

else if ((document.body) && (document.body.clientWidth))

winWidth = document.body.clientWidth;

if (window.innerHeight)

winHeight = window.innerHeight;

else if ((document.body) && (document.body.clientHeight))

winHeight = document.body.clientHeight;

if (document.documentElement  && document.documentElement.clientHeight && document.documentElement.clientWidth)

{winHeight = document.documentElement.clientHeight;

winWidth = document.documentElement.clientWidth;}

return{"W":winWidth,"H":winHeight}

}

</script>

</html></td>

 </tr>

</table>

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