April 2018
Intermediate to advanced
298 pages
6h 34m
English
Content preview from React 16 Tooling
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Finding CPU intensive components
The shouldComponentUpdate() life cycle method enables macro-optimization of your component performance. If there's clearly no need to re-render the element, then let's sidestep the reconciliation process entirely. Other times, reconciliation simply cannot be avoided—the element state is changing frequently, and these changes need to be reflected in the DOM for the user to see.
The development version of React 16 has some handy performance tooling built into it. It calls the relevant browser dev tool APIs in order to record relevant metrics while a profile is being recorded. Note that this isn't related to the React Developer Tools browser extension that you installed earlier; this is simply React interacting ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.