Verifying Email address

Question

I'm trying to create a form that verifies that an email address has been entered. Not necessarily check its validity but basically sakjfsfksldjf@email.com. I was wondering how to go about doing it in PURE JavaScript and no RegEx.

    <!DOCTYPE html>

    <html lang="en" xmlns="http://www.w3.org/1999/xhtml">
    <head>
        <meta charset="utf-8" />
        <title>Test File</title>
    </head>
        <script>
            function submitForms() {
                email_format = document.getElementById('email_input')       // want to return T or F
                if (email_format) {
                    //print email successful
                }
                else {
                   //print error message
                }         
        </script>

    <body>

        <form>
            Email:            
            <input type ="email" id ="email_input" />
        </form>

        <button type = "button" onclick = "submitForms;"> Submit All!
        </button>
    </body>
    </html>

http://stackoverflow.com/questions/4964691/super-simple-email-validation-with-javascript - does this help? — zedfoxus, Aug 29 '13 at 17:17

score 1 · Accepted Answer · edited May 23 '17 at 12:29

1

This has been answered a lot. Here's a good function that tests for a valid email format and it's not too tricky to read, and not too restrictive either.

function IsEmail(email) {
    var regex = /^([a-zA-Z0-9_.+-])+\@(([a-zA-Z0-9-])+\.)+([a-zA-Z0-9]{2,4})+$/;
    return regex.test(email);
}

Per: Email validation using jQuery

edited May 23 '17 at 12:29

Community

1
1

answered Aug 29 '13 at 17:16

Matt Pavelle

819
5
8

score 1 · Answer 2 · edited May 23 '17 at 12:13

Here is a previously answered regular expression answer. Its pretty good.

function validateEmail(email) { 
    var re = /^(([^<>()[\]\\.,;:\s@\"]+(\.[^<>()[\]\\.,;:\s@\"]+)*)|(\
".+\"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA
-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/;
    return re.test(email);
}

Credits: https://stackoverflow.com/a/46181/295264

However, the only good to verify an email address is by sending a confirmation email and hearing back.

score 1 · Answer 3 · edited May 23 '17 at 12:05

1

I think you are looking for this:

 function IsEmail(email) {
 var regex = /^([a-zA-Z0-9_.+-])+\@(([a-zA-Z0-9-])+\.)+([a-zA-Z0-9]{2,4})+$/;
 return regex.test(email);
}

which was found here: Email validation using jQuery

edited May 23 '17 at 12:05

Community

1
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answered Aug 29 '13 at 17:17

bart2puck

2,432
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Verifying Email address

3 Answers3