Matt Griffin GriffinArtworks

What forces layout / reflow

All of the below properties or methods, when requested/called in JavaScript, will trigger the browser to synchronously calculate the style and layout*. This is also called reflow or layout thrashing, and is common performance bottleneck.

Element

Box metrics

elem.offsetLeft, elem.offsetTop, elem.offsetWidth, elem.offsetHeight, elem.offsetParent
elem.clientLeft, elem.clientTop, elem.clientWidth, elem.clientHeight
elem.getClientRects(), elem.getBoundingClientRect()

	;(function ($, window) {

	var intervals = {};
	var removeListener = function(selector) {

	if (intervals[selector]) {

	window.clearInterval(intervals[selector]);
	intervals[selector] = null;
	}