react基础redux的基本使用

1、通过createStore创建好store

import { createStore } from 'redux'
import reducer from './reducer'

const store = createStore(reducer);

export default store

2、在需要使用state的地方调用 store.getState()获取store中存储的状态

 constructor(props) {
    super(props);
    this.state = store.getState(); // 通过getState方法获store中的状态
    this.hotChangeState = this.hotChangeState.bind(this);
    store.subscribe(this.hotChangeState);
  }

3、实时更新state的内容 store.subscribe(this.hotChangeState)

hotChangeState() {
    this.setState(store.getState())
}