mail validation with regex

Question

I want to make mail validation with regex but it's not working.where is my mistake? It's normally working but when I put a regex control its never see yes the mail you key in is enable for this regex format.

Here is my code;

index.jsp

 <head>
<title>Mail Control From Db</title>
<script type="text/javascript" src="jquery-1.2.6.min.js"></script>
<script type="text/javascript" src="check.js"></script>
</head>

<body>

<div align="left">
<form name="chkForm" id="chkForm" method="post"  >
    <table>  
            <tr>
                    <td>Email</td>
                    <td>
                    <input type="text" name="email" id="email" size="20"  ></td>
                    <td>
                    <div id="emailInfo" align="left"></div>
                    </td>
            </tr>

    </table>
</form>
</div>

</body>
</html>

check.js

$(document).ready(function()
 {    
 var myForm = $("#chkForm"), email = $("#email"), emailInfo = $("#emailInfo");     


 //send ajax request to check email          
 email.blur(function()
 {          
 $.ajax({
    type: "POST",
    data: "email="+$(this).attr("value"),
    url: "check.jsp",

    beforeSend: function()
    {
        emailInfo.html("<font color='blue'>Kontrol Ediliyor..</font>");
    },//end beforeSend: function()



    success: function(data)
    {                   
        var reg = /\S+@\S+\.\S+/;


        if (reg.test(email.val()))
        {
            var checkData = data.toString();
                if(checkData == 0)
                {  
                    emailok = false;
                    emailInfo.html("<font color='red'>Mail in use</font>");
                }//end if(checkData == 0)
                else if(checkData == 1)
                {
                    emailok = true;
                    emailInfo.html("<font color='green'>Mail is not in use</font>");
                }//end else if(checkData == 1)

        }//end if (reg.test(email.val()))

        else
        {
            emailInfo.html("<font color='red'>ınvalid mail</font>");
        }//end else
  }// end success: function(data)


 });
 });//end email.blur(function()
 });//end $(document).ready(function()

I had a problem in check.jsp. and solved it.

problem is about regex.Regex was false.
condition was false. i change it with if (reg.test(email.val())).

Please, add your solution as *an Answer* and mark it as the correct one. — brasofilo, Jul 25 '13 at 08:57
Possible duplicate of [Using a regular expression to validate an email address](http://stackoverflow.com/questions/201323/using-a-regular-expression-to-validate-an-email-address) — tripleee, Apr 14 '16 at 13:50

Lars Ebert · Answer 1 · 2013-07-17T06:51:52.513

0

Your regex only allows capital letters, so TEXT@EXAMPLE.COM would be okay but test@example.com not. You can change that either by adding the case-insensitive-flag to your regex

/^[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,6}$/i

or simply allow a-z in the regex itself

/^[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Za-z]{2,6}$/

But keep in mind that checking emails for validity is quite a difficult tasks to do, as the range of allowed mail-adresses is extremely broad and they even could contain special-chars like äüö etc. So your regex is not perfect, keep that in mind!

In PHP, I used this function for years and it always seemed to work.

Why exactly are you using .toString() in this case? .test() gives you an boolean which you can perfectly check with == false - is there any reason why you want to convert this to a string?

edited Jul 17 '13 at 06:51

answered Jul 17 '13 at 06:41

Lars Ebert

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is there any regex that you can advice to me then. and its not still working i think i have a problem in there; if(reg.test(email).toString() == false) – JavaCandir Jul 17 '13 at 06:50
i know thats a easy question but i am new in js. how can we change that code ? what do i have to write ? – JavaCandir Jul 17 '13 at 07:35
Frankly I do not know if this function can be ported to javascript. Sorry. – Lars Ebert Jul 17 '13 at 07:41

mail validation with regex

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