Email Verification JavaScript

Just a little code snippet to verify an email in JavaScript.

The function:

<script type="text/javascript">
    var result = emailVerification("insert email here");
    function emailVerification(email){
        var filter = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
        if (!filter.test(email.value)) {
            return false;
        } else {
            return true;
        }
    }
</script>

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