<!DOCTYPE html>
<html>
<head>
<title>循环</title>
<meta charset="utf-8">
<script type="text/javascript">
var a = 1000;
var j = 0;
while(true){
if(a>5000){
break;
}
a*=1.05;
j++;
}
alert(j+'年');
alert(a+'元');
</script>
</head>
<body>
</body>
</html>
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