jquery - JavaScript to detect bottom of page does the reverse on Chrome -


i'm trying infinite scrolling page, condition test if we're @ bottom of page not behaving correctly on chrome. on chrome alert seems trigger @ top of page rather when hitting bottom. works correctly on ie11 though.

on chrome $(document).height() equals 0. have <!doctype html> html @ top of page if matters.

oddly took example worked within jsfiddle on chrome: http://jsfiddle.net/nick_craver/gwd66/

$(window).scroll(function () {         if ($(window).scrolltop() + $(window).height() == $(document).height()) {             alert("test");         }     } }

what kind of css applied page, more body element? padding or margin making $(document).height() equal more combination of $(window).scrolltop() , $(window).height(). following code determine if ever meeting if() criteria.

what version of jquery using? 

 $(window).scroll(function() {     var scrollposition = $(window).scrolltop() + $(window).height();     var bodyheight = $(document).height();     $("#scrollindex").html( scrollposition + " / " + bodyheight );     if( scrollposition == bodyheight ) {         $("#scrollindex").html( "bottom!" );         $('body').height( bodyheight + 200 + "px" );     }  });
body{  	height:2000px;  }  #scrollindex{  	position:fixed;    	top:0px;    	right:0px;  }
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>  <div id='scrollindex'></div>


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