今天嘗試著做了一個用JS控制的實現用回車來切換控件的示例，代碼如下：
<!DOCTYPE?HTML?PUBLIC?"-//W3C//DTD?HTML?4.01?Transitional//EN">
<html>
<head>
<meta?http-equiv="Content-Type"?content="text/html;?charset=UTF-8">
<title>用回車實現控件間的切換—示例</title>

<script?type="text/javascript"?for="document"?event="onkeydown">
<!--
??if(event.keyCode?==?13)
?????event.keyCode?=?9;
-->
</script>
</head>
<body>
????姓名：<input?id="input1"?type="text"><br>
????年齡：<input?id="input2"?type="text"><br/>
????性別：<select?size="1">
????????????<option?value="1">男</option>
????????????<option?value="2">女</option>
????????????</select><br>
????籍貫：<input?id="input3"?type="text"><br/>
????是否畢業：<input?type="checkbox"?name="yes"?value="1"/>是
????<input?type="checkbox"?name="yes"?value="1"/>否<br>
????畢業院校:?<input?id="input4"?type="text"><br>
????<br>
</body>
</html>