[React]Context的初始化教學

//在createContext()時初始化
import React from 'react'

const state = { name: 'Tania', loggedIn: true }

const UserContext = React.createContext(state)

//context.provider value = {state}時給值
import React from 'react'
import HomePage from './HomePage'
import { UserProvider } from './UserContext'

function App() {
  const user = { name: 'Tania', loggedIn: true }

  return (
    <UserProvider value={user}>
      <HomePage />
    </UserProvider>
  )
}