html - 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 companyX, companyY, companyZ.

Hence the acceptable emails would be:-

• [email protected]
• [email protected]
• [email protected]

Any idea how to do it in JQuery?

Update

This is what I wrote, uptill now

($input)

if (
     (preg_match("/^[email protected]$/i", $input) ||
     (preg_match("/^[email protected]$/i", $input) ||
     (preg_match("/^[email protected]$/i", $input)
   ) {

}
else {
      //Error.
}

Thanks

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.