React useEffect() hook introduction 🌟
#react #tutorial #course
00:00:00 introduction
00:02:00 setup
00:03:25 no dependencies
00:04:50 empty dependency array
00:05:51 1 dependency
00:07:25 multiple dependencies
00:09:57 why use useEffect()?
00:11:33 example 2
00:15:51 return
00:17:31 multiple useEffect() hooks
00:18:52 conclusion
// useEffect()
// React Hook that tells React to DO THIS CODE WHEN:
// (pick one)
// This component re-renders
// This component mounts
// The state of a value changes
// useEffect(function, [dependencies])
// USES
// #1 Event Listeners
// #2 DOM manipulation
// #3 Subscriptions (real-time updates)
// #4 Fetching Data from an API
// #5 Clean up when a component unmounts
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