<!DOCTYPE html>
<html>
<head>
<style>
#box {float:left;width:100%;height:18px;border:1px solid;}
#bar {float:left;width:100%;height:18px;border:0px;background:#00f;}
</style>
</head>
<body>
<div id="box">
<div id="bar"></div>
</div>
<script language="javascript">
var total = 6480; //总数
var curN = 4480; //当前值
function show()
{
var box = document.getElementById("box");
var o = document.getElementById("bar");
o.style.width = ((curN / total) * 200) + 'px'; //200是外框的宽度
}
show();
</script>
</body>
</html>
<!DOCTYPE html>
<html>
<head>
<style>
#box {float:left;width:200px;height:18px;border:1px solid;}
#bar {float:left;width:100%;height:18px;border:0px;background:#00f;}
</style>
</head>
<body>
<div id="box">
<div id="bar"></div>
</div>
<script language="javascript">
var total = 6480; //总数
var curN = 6400; //当前值
var baseNub = total - curN;
function show()
{
var box = document.getElementById("box");
var o = document.getElementById("bar");
o.style.width = ((baseNub / total) * 200) + 'px'; //200是外框的宽度
}
show();
</script>
</body>
</html>
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