如何让用户按下enter键后光标直接定位到下一个输入框，代码如下：
<html xmlns="http://www.maopiaopiao.com/javascript-function/61.html">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>ENTER键可以让光标移到下一个输入框</title>
<script language="javascript">
function changeEnter(){
if(event.keyCode==13){event.keyCode=9;}
}
</script>
</head>
<body>
<form id="form1" name="form1" method="post" action="">
<p>用户名：<input type="text" name="textfield" id="textfield" onkeydown="changeEnter()" /></p>
<p>密码：<input type="text" name="textfield2" id="textfield2" onkeydown="changeEnter()" /></p>
<p><input type="submit" name="button" id="button" value="提交" /></p>
</form>
</body>
</html>