paulirish

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.

Generally, all APIs that synchronously provide layout metrics will trigger forced reflow / layout. Read on for additional cases and details.

Element APIs

Getting box metrics

• elem.offsetLeft, elem.offsetTop, elem.offsetWidth, elem.offsetHeight, elem.offsetParent

amboutwe

<?php
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/* Change size for Yoast SEO OpenGraph image for all content 
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 * Accepts WordPress reserved image size names: 'thumb', 'thumbnail', 'medium', 'large', 'post-thumbnail'
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