javascript - Jquery Value match Regex

I am trying to validate the input for E-Mail via JQuery:

My JQuery

This won't alert even though I entered example@example.com.
I already tried .test() and .match(), what did I do wrong?

Answer

• Pass a string to RegExp or create a regex using the // syntax


• Call regex.test(string), not string.test(regex)

So

jQuery(function () {
    $(".mail").keyup(function () {
        var VAL = this.value;

        var email = new RegExp('^[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,4}$');

        if (email.test(VAL)) {
            alert('Great, you entered an E-Mail-address');
        }

    });
});