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Posted By :
avatarmrkraju
Total Views : 2779

Email ID Validation Using JavaScript Regular Expression

By using the regular expression "/^([\w-\.]+)@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.)|(([\w-]+\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$/" we can validate the email in JavaScript.


Enter Email ID :       


Source Code :

<html xmlns="http://www.w3.org/1999/xhtml">

<head runat="server">

    <title>Email ID Validation Using JavaScript Regular Expression.</title>

    <script language="javascript">

        function ValidateEmailID(txtEmailID) {

            var filter = /^([\w-\.]+)@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.)|(([\w-]+\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$/;

            if (txtEmailID.value == "") {

                txtEmailID.style.border = "";

                return true;

            }

            else if (filter.test(txtEmailID.value)) {

                txtEmailID.style.border = "";

                return true;

            }

            else {

                txtEmailID.style.borderColor = "red";

                return false;

            }

        }

    </script>

</head>

<body>

    <form id="form1" runat="server">

    <div>

        Enter Email ID :

        <input type="text" onkeyup="ValidateEmailID(this);" />

    </div>

    </form>

</body>

</html>

 

 






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