html页面中js添加遮盖层实现等待效果

来源：互联网发布：哈希算法java 编辑：程序博客网时间：2024/04/29 19:27

<html>
<head>
<title>遮罩层</title>
<meta charset="gb2312" />
<style>
#cover{
display:none;
position:fixed;
z-index:1;
top:0;
left:0;
width:100%;
height:100%;
background:rgba(0, 0, 0, 0.44);
}
#coverShow{
display:none;
position:fixed;
z-index:2;
top:50%;
left:50%;
border:1px solid #127386;
width:300px;
height:100px;
margin-left:-150px;
margin-top:-150px;
background:#127386;
}
</style>
<script>

function coverit()
{
var cover = document.getElementById("cover");
var covershow = document.getElementById("coverShow");
cover.style.display = 'block';
covershow.style.display = 'block';
setTimeout("showTime()",3000);
}
function showTime(){
   var cover = document.getElementById("cover");
   var covershow = document.getElementById("coverShow");
   cover.style.display = '';
   covershow.style.display = '';

}
</script>
</head>
<body>
<div id="cover"></div>
<div id="coverShow">
   <table align="center" border="0" width="100%" cellspacing="0" cellpadding="0" style="border-collapse: collapse; height: 100px; min-height: 100px;" bgcolor="#127386">
       <tr>
       <td height="30" style="font-size: 12px;">正在加载，请稍后......</td>
       </tr>
       <tr>
       <td align="center" bgcolor="#ffffff">
       <img src="ajax-loader.gif"/>
       </td>
       </tr>
   </table>
</div>
<input type="button" value="遮住" onclick="coverit()"/>
</body>
<html>

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