scroll - How to detect horizontal scrolling in jQuery?

Question

How do I detect horizontal scrolling with jQuery?

This will get all scrolls:

$(window).scroll(function () {
    alert('in');
});

I want just the horizontal one.

Answer 1

This seems to work.

var lastScrollLeft = 0;
$(window).scroll(function() {
    var documentScrollLeft = $(document).scrollLeft();
    if (lastScrollLeft != documentScrollLeft) {
        console.log('scroll x');
        lastScrollLeft = documentScrollLeft;
    }
});

jsFiddle.