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1、<head>......</head>
<head>
<script type="text/javascript" >
document.write('im in head <br/>');
</script>
</head>
2、<body>......</<body>
<body>
<script type="text/javascript">
document.write("im in body");
</script>
</body>
3、 <script type="text/javascript" scr="*****.js">
<html>
<head>
<title>Factorials</title>
</head>
<body>
<h2>Table of Factorials</h2>
<script>
var fact = 1;
for(i = 1; i < 10; i++) {
fact = fact*i;
document.write(i + "! = " + fact + "<br>");
}
</script>
</body>
</html>