How JavaScript validates e-mail addresses and MX records

This example describes how JavaScript validates e-mail addresses and MX records. Share to everyone for your reference. as follows:

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Tests for a valid e-mail address and optionally Tests for valid MX records, too. function Is_valid_email ($email, $test _mx = False) {if eregi ("^" ([_a-z0-9-]+) (. [ _a-z0-9-]+) *@ ([a-z0-9-]+) (. [ a-z0-9-]+) * (. [ a-z]{2,4}) $ ", $email)" if ($test _mx) {list ($username, $domain) = Split ("@", $email); return Getmxrr ($domain, $mxrecords); else return true; else return false; }

I hope this article will help you with your JavaScript programming.