javascript - URL Validation REGEX - URL just valid with http://

Question

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");
    }
});

Answer 1

Remove the |www.?

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