[History] 在JavaScript中Null 数据类型的含义？
- (current) April 23, 2012, 12:03 a.m. zhmm
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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">
