使用jQuery和regex验证电子邮件地址

Question

使用jQuery和regex验证电子邮件地址

我不太确定该怎么做。我需要使用regex验证电子邮件地址，如下所示：

[a-z0-9!#$%&'*+/=?^_`{|}~-]+(?:\.[a-z0-9!#$%&'*+/=?^_`{|}~-]+)*@(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\.)+(?:[A-Z]{2}|com|org|net|edu|gov|mi
l|biz|info|mobi|name|aero|asia|jobs|museum)

然后，我需要在这样的jQuery函数中运行这个函数：

$j("#fld_emailaddress").live('change',function() { var emailaddress = $j("#fld_emailaddress").val();// validation here? if(emailaddress){}
// end validation$j.ajax({  
        type: "POST",  
         url: "../ff-admin/ff-register/ff-user-check.php",  
        data: "fld_emailaddress="+ emailaddress,  
        success: function(msg)
        { 
            if(msg == 'OK') { 
            $j("#fld_username").attr('disabled',false); 
            $j("#fld_password").attr('disabled',false); 
            $j("#cmd_register_submit").attr('disabled',false); 
            $j("#fld_emailaddress").removeClass('object_error'); // if necessary
            $j("#fld_emailaddress").addClass("object_ok");
            $j('#email_ac').html('&nbsp;<img src="img/cool.png" align="absmiddle"> 
            <font color="Green"> Your email <strong>'+ emailaddress+'</strong> is OK.</font>  ');
            } else {  
            $j("#fld_username").attr('disabled',true); 
            $j("#fld_password").attr('disabled',true); 
            $j("#cmd_register_submit").attr('disabled',true);  
            $j("#fld_emailaddress").removeClass('object_ok'); // if necessary
            $j("#fld_emailaddress").addClass("object_error");
            $j('#email_ac').html(msg);
            }
        }
     });});

验证到哪里去了，表达式是什么？

Answer 1

这是我的解决办法：function isValidEmailAddress(emailAddress) {     var pattern = new RegExp(/^[+a-zA-Z0-9._-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,4}$/i);     // alert( pattern.test(emailAddress) );     return pattern.test(emailAddress);};

Answer 2

$(document).ready(function() {$('#emailid').focusout(function(){                 $('#emailid').filter(function(){                    var emil=$('#emailid').val();               var emailReg = /^([\w-\.]+@([\w-]+\.)+[\w-]{2,4})?$/;             if( !emailReg.test( emil ) ) {                 alert('Please enter valid email');                 } else {                 alert('Thank you for your valid email');                 }                 })             });});