<!DOCTYPE html> <html> <head lang="en"> <meta charset="UTF-8"> <title></title> </head> <body> <script type="text/javascript"> function checkMobile(){ var sMobile = document.mobileform.mobile.value ///^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/ if(!(/^1[3|5][0-9]\d{4,8}$/.test(sMobile))){ alert("不是完整的11位手机号或者正确的手机号前七位"); document.mobileform.mobile.focus(); return false; } } </script> <form action="" name="mobileform" method="post" onSubmit="return checkMobile();"> <INPUT name="mobile" class=tdc size="40" maxLength="11"> <INPUT name="action" type="hidden" value=mobile> <INPUT class=bdtj name=B1 type=submit value="查 询"> </FORM> </body> </html>
原文：http://www.cnblogs.com/wzzl/p/4877433.html