为什么没有结果显示
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Math </title>
<script type="text/javascript">
var i=Math.random()*10;
document.write("产生的随机数："i+"<br/>");
var j=Math.round(i);
document.write("随机数取整："+j);
</script>
</head>
<body>
</body>
</html>
