javascript 2017/06/06 [中]在Redux中使用选择器以获得很好的效果

Posted 2021-05-04

const initialState = {
  user: {
    name: 'anonymous',
    token: null
  }
}

const getUser = state => state.user || {}
const isAuthenticated = state => Boolean(getUser(state).token)
const isAnonymous = state => !isAuthenticated(user)