Hamza Erbay hamzaerbay

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()

	import React from 'react';
	import videojs from 'video.js';
	import 'video.js/dist/video-js.css';

	// video.js player from the docs: https://github.com/videojs/video.js/blob/master/docs/guides/react.md

	class VideoPlayer extends React.Component {
	componentDidMount() {
	// instantiate Video.js
	this.player = videojs(this.videoNode, this.props, function onPlayerReady() {



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