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GoogleChrome/lighthouse
GoogleChrome/lighthouse PublicAutomated auditing, performance metrics, and best practices for the web.
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What forces layout/reflow. The compr...
What forces layout/reflow. The comprehensive list. 1# What forces layout / reflow
23All 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](http://www.kellegous.com/j/2013/01/26/layout-performance/), and is common performance bottleneck.
45Generally, all APIs that synchronously provide layout metrics will trigger forced reflow / layout. Read on for additional cases and details.
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