<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>while</title>
<script type="text/javascript">
var mynum =1;//mynum初值化数值为1
while(mynum<=5)
{
document.write("数字:"+mynum+"<br/>");
mynum=mynum+1;
}
</script>
</head>
<body>
</body>
</html>
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