Avoid this React State Mistake | React Previous State Explained

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In this tutorial, React Previous State is explained. I will also explain why using setState with count + 1 is NOT wrong... but updating previous state in React requires an understanding of how state and re-rendering work together.

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Avoid this React State Mistake | React Previous State Explained

(00:00) Intro
(00:05) count + 1 is NOT wrong
(01:12) Know when to use the right tool
(01:28) The Golden Rule
(02:09) Previous State function example
(03:05) Why prefer the prevState function
(07:28) Previous state with arrays
(10:03) Previous state with objects
(12:06) Summary

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