Email Check for JavaScript

Question

i'm working on my site, but i have a problem with the email checker, i dont get why it wont work (I HAVE NEVER USED JS BEFORE) so i did like that:

var flag=true;

    var st = Form1["email"].value.indexOf("@");

    if (st == -1)

    {

        alert("You must insert @ in email address.");

        flag=false;

    }

Can some one help me? thanks for the help

Check this thread, http://stackoverflow.com/questions/940577/javascript-regular-expression-email-validation Solved using regular expressions. — user1390282, Jun 13 '13 at 14:27
@zenith how do you learn without trying things and encountering stuff that you don't understand? Books and articles only go so far. (Now why do they ask write my code questions...) — Ben McCormick, Jun 13 '13 at 14:30
@ben336 "Books and articles only go so far" - I wouldn't say that, good books have endless possibilities. I'd rather spend a few hours reading beforehand and save myself time in the long run. — dsgriffin, Jun 13 '13 at 14:39

score 0 · Answer 1 · answered Jun 13 '13 at 14:30

0

Regular expressions are your friend, try this:

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);
}

answered Jun 13 '13 at 14:30

Karl Anderson

34,606
12
65
80

1

Great, now I have 2 problems ;) – anddoutoi Jun 13 '13 at 14:32
Why are you allowing spaces in the host part? – SLaks Jun 13 '13 at 14:33

Jake Mogra · Answer 2 · 2013-06-13T14:46:33.827

0

    var regex = /^[0-9a-zA-Z]+([0-9a-zA-Z]*[-._+])*[0-9a-zA-Z]+@[0-9a-zA-Z]+([-.][0-9a-zA-Z]+)*([0-9a-zA-Z]*[.])[a-zA-Z]{2,6}$/;

   if (regex.test(Form1["email"].value) == false) 
   {
   alert("Invalid E-mail address!");
   }

edited Jun 13 '13 at 14:46

answered Jun 13 '13 at 14:38

Jake Mogra

51
9

Email Check for JavaScript

2 Answers2