Trigger JQuery function when passed half way down the page

Question

Is there a way to tell if you have scrolled passed the center of the web page or in other words, when you have scrolled passed exactly half of the web page and your scrollba

Answer 1

I guess you want to do something like this:

if($(document).scrollTop() > $(document).height()/2){
   $('.pineapple-man').show();
}

where scrollTop() gets the current horizontal position and height() defines the document height.