怎样实现让焦点自动跳转的实例

程序员文章站 2024-01-13 15:57:16

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<html> 
<head> 
<meta http-equiv="Content-Type" content="text/html; charset=gb2312"> 
<title>html－www.51windows.Net</title> 
</head> 
<body> 
以下四个文本框，每个限输入四个字符，输入完后自动跳到下一文本框 
<script ID="clientEventHandlersJS" LANGUAGE="javascript"> 
<!-- 
function T1_onkeyup() { 
if(document.card.T1.value.length==4){ 
document.card.T2.focus(); 
} 
} 
function T2_onkeyup() { 
if(document.card.T2.value.length==4){ 
document.card.T3.focus(); 
} 
} 
function T3_onkeyup() { 
if(document.card.T3.value.length==4){ 
document.card.T4.focus(); 
} 
} 
//--> 
</script> 
<form method="POST" name="card" action> 
输入字符： 
<input type="text" name="T1" size="4" maxlength="4" LANGUAGE="javascript" onkeyup="return T1_onkeyup()">- 
<input type="text" name="T2" size="4" maxlength="4" LANGUAGE="javascript" onkeyup="return T2_onkeyup()">- 
<input type="text" name="T3" size="4" maxlength="4" LANGUAGE="javascript" onkeyup="return T3_onkeyup()">- 
<input type="text" name="T4" size="4" maxlength="4"> 
</form> 
</body> 
</html> 
<p style="position: absolute; top: 10; right: 10; width: 148; height: 18;cursor:hand"> 
<input type="button" name="Button" value="查看源代码" onClick= 'window.location = "view-source:" + window.location.href'></p>

以上就是怎样实现让焦点自动跳转的实例的详细内容，更多请关注其它相关文章！