<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>
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