<!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>
<title>进度条</title>
<style type="text/css">
body{
text-align:center;
}
.graph{
width:450px;
border:1px solid #F8B3D0;
height:25px;
}
#bar{
display:block;
background:#FFE7F4;
float:left;
height:100%;
text-align:center;
}
#barNum{
position:absolute;
}
</style>
<script type="text/javascript">
function $(obj){
return document.getElementById(obj);
}
function go(){
$("bar").style.width = parseInt($("bar").style.width) + 1 + "%";
$("bar").innerHTML = $("bar").style.width;
if($("bar").style.width == "100%"){
window.clearInterval(bar);
}
}
var bar = window.setInterval("go()",50);
window.onload = function(){ bar;}
</script>
</head>
<body>
<div class="graph">
<strong id="bar" style="width:1%;"></strong>
</div>
</body>
</html>
原文：http://www.cnblogs.com/qiyongliang/p/3835615.html