How it works

I have an input field to enter the URL of a Website and i wanna check it and if the URL is OK i will give the inputfield a class(validated_ok) and remove a class (cf_required) and if its wrong the other way around.

Problem

The url should just be right if it is written with http:// but actually its also right with just www (www.google.ch). How i have to change the regex?

Javascript

// CHECK WEBSITE

$(.cf_required[name='website']).focusout(function() {

    var myVariable = $(this).val();

    if(/^(http://www.|https://www.|http://|https://|www.)[a-z0-9]+([-.]{1}[a-z0-9]+)*.[a-z]{2,5}(:[0-9]{1,5})?(/.*)?$/.test(myVariable)){

        $(this).addClass(validated_ok).removeClass(cf_required)

    } else {

        $(this).removeClass(validated_ok).addClass(cf_required);

    }

});