jquery做的一个简单的屏幕锁定提示框

复制代码代码如下:
<！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 language="JavaScript" type="text/javascript" src="/js/jquery-1.8.3.min.js"></script>
<script language="JavaScript" type="text/javascript">
$（document）.ready（function（）{
$（"a"）.click（function（）{
var wwd=$（document）.width（）;
var wgd=$（document）.height（）;
$（"body"）.prepend（"<div id="zhezhaoc"></div>"）;
$（"#zhezhaoc"）.css（{
"width" : ""+wwd+"px",
"height" : ""+wgd+"px",
"background-color" : "#000000",
"z-index" : "1100",
"opacity" : "0.5",
"position" : "absolute",
"top" : "0px",
"left" : "0px"
}）;
alert（"提示框任意"）;
}）;
}）;
</script>
</head>

<body>
<a href="#">测试按钮</a>

</body>
</html>