Question 86816 in ASP.NET Question posted in
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Javascript Email Checker in ASP.NET

Basically I am trying to have a text box that upon change it checks if a valid email is in place and if so the form is submitted for the user. I would like to improve the regex too to only allow a specific domain but I can’t get any regex to work due to every time I use a @ sign it thinks I am trying to use C# code I looked it up and supposedly adding a : fixes it but it hasn’t for me and I tried a ; too.

document.getElementById("txtCallerID").onchange = function () {
        var temp = document.getElementById("txtCallerID").value

        if (/^w+([.-]?w+)*@w+([.-]?w+)*(.w{2,3})+$/.test(temp))
          {
            this.document.submit();
          }
    }

and here is a picture with the error.
enter image description here

Have now also tried adding a backslash before the @ to no avail.

enter image description here

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2

Answers


  1. 0

    You can safely escape the @ symbol with a backslash so it’s only recognised as a regex literal. Here is how you would do this…

    Change: @ to @

    Fixed regex literal: /^w+([.-]?w+)*@w+([.-]?w+)*(.w{2,3})+$/

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  2. 0

    TL;DR
    To escape the @ sign in cshtml use @@.

    For more info, please check this answer.

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