本文介绍了一种使用HTML和JavaScript实现页面加载进度条的方法。通过调整进度条宽度来直观展示页面加载进度，提升用户体验。代码适用于IE浏览器。
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3c.org/TR/1999/REC-html401-19991224/loose.dtd">
<HTML xmlns="http://www.w3.org/1999/xhtml"><HEAD><TITLE>Untitled Page</TITLE>
<META http-equiv=Content-Type content="text/html; charset=gb2312">
<SCRIPT language=JavaScript1.2>
var duration=5 //步长
var clipright=0//距离右面的像素数量
var widthIE=0//
var widthNS=0
var startIE;
function initializebar()
{
if (document.all)
{
widthIE=bar.style.pixelWidth
startIE=setInterval("increaseIE()",100)
}
}
function increaseIE()
{
bar.style.clip="rect(0 "+ clipright +" auto 0)"
if (clipright<widthIE)
clipright=clipright+(widthIE/(duration*20))
else
clearInterval(startIE)
}
window.onload=initializebar
</SCRIPT>
<META content="MSHTML 6.00.3790.4106" name=GENERATOR></HEAD>
<BODY>
<DIV style="Z-INDEX: 1; HEIGHT: 20px">
<DIV id=barbackground
style="Z-INDEX: 2; LEFT: 0px; WIDTH: 200px; POSITION: absolute; TOP: 0px; HEIGHT: 20px; BACKGROUND-COLOR: black"></DIV>
<DIV id=bar
style="Z-INDEX: 3; LEFT: 0px; WIDTH: 200px; POSITION: absolute; TOP: 0px; HEIGHT: 20px; BACKGROUND-COLOR: blue"></DIV></DIV></BODY></HTML>
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