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');
                }
                })
            });});