Giới thiệu hook React useState() 🎣

#reactjs #course #tutorial

00:00:00 introduction

00:01:10 setup

00:01:57 import useState

00:02:25 update a string

00:05:38 initial state

00:05:58 increment a number

00:07:29 toggle a boolean

00:09:24 Counter program

00:13:14 Counter CSS

00:16:03 conclusion

// React hook = Special function that allows functional components

// to use React features without writing class components

// (useState, useEffect, useContext, useReducer, and more...)

// useState() = A React hook that allows the creation of a stateful variable

// AND a setter function to update its value in the Virtual DOM.

// [name, setName]