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Set and Update State with useState

A Hook is a function that lets you "hook into" React state and lifecycle features from function components. The most useful built-in Hook is useState(), which allows you to do what its name implies: use React state in a function component.

<div class="secondary box"> <strong>Note: </strong> You're able to use Hooks starting in React 16.8, and they are entirely "opt-in". You can start usi...