Comparing date part only without comparing time in JavaScript

Question

What is wrong with the code below?

Maybe it would be simpler to just compare date and not time. I am not sure how to do this either, and I searched, but I couldn\'t

Answer 1

How about this?

Date.prototype.withoutTime = function () {
    var d = new Date(this);
    d.setHours(0, 0, 0, 0);
    return d;
}

It allows you to compare the date part of the date like this without affecting the value of your variable:

var date1 = new Date(2014,1,1);
new Date().withoutTime() > date1.withoutTime(); // true