Home > DeveloperSection > Forums > How to C# and javascript email validation regex
Norman Reedus
Norman Reedus

Total Post:45

Posted on    January-18-2015 10:05 PM

 ASP.Net C#  JavaScript  Regex 

 1 Reply(s)
 549  View(s)
Rate this:

I have ASP.NET project and I need to check is email correct or not. I always using that script, but it fails with asp.net, because @ is bad symbol.

function emailvalidate(e)


    var b=/^[^@\s]+@[^@\.\s]+(\.[^@\.\s]+)+$/;

    return b.test(e);


How can I fix this? And its important to check email by JavaScript, not ASP.NET or C#.

P.S. Im really new with ASP.NET and JavaScript RegEx.

David Miller

Total Post:30

Posted on    January-18-2015 10:29 PM

Are you using the Razor view engine? If so you will need to escape those @ symbols if you are adding this script to the cshtml file itself

function emailvalidate(e)


    var b=/^[^@@\s]+@@[^@@\.\s]+(\.[^@@\.\s]+)+$/;

    return b.test(e);


or you can wrap the regular expression in @Html.Raw as deherch mentioned:

var b = @Html.Raw(@"/^[^@\s]+@[^@\.\s]+(\.[^@\.\s]+)+$/");

you can also add this function to a script file with all your other common JS functions. This way you do not need to escape the razor syntax at all.

Win mentions that you want to use server-side validation. I would say best to use both. Client-side validation can stop it from ever hitting the server in the first place. And server-side validation because you can never trust what a client passes in.

Modified On Mar-14-2016 01:22:37 AM

Don't want to miss updates? Please click the below button!

Follow MindStick