Allow only specific email address' domain to register through JQuery (preferably)

Question

I am trying to make registration form within which I want to register only with specific domains\' emails. For e.g. I want to register only the emails which are from the com

Answer 1

An email is only going to contain one @ so you could split the input value and take the second part

str = str.split('@').slice(1);

then simply check if that is in your acceptable list

var allowedDomains = [ 'x.com', 'y.com', 'z.com' ];

if ($.inArray(str[0], allowedDomains) !== -1) {
    //acceptable
}else{
    //not acceptable
}

here is a working example in a jsfiddle: http://jsfiddle.net/UwmYK/2/ just type in the email and click run.

Answer 2

What if you have the input textbox only accept the first part of an email address and then have a select box that only has the email domains you want to allow for the user to select from?