学习地址:
Redux 中文文档
redux-saga
文件目录结构:

创建一个store文件夹,里面有个index, index.js code:
在store中将reducer注入。
import {createStore} from 'redux'
import reducer from './reducer'
// reducer 注入
const store = createStore(
    reducer,
    window.__REDUX_DEVTOOLS_EXTENSION__ && window.__REDUX_DEVTOOLS_EXTENSION__()
    );
export default store;
reducer.js code:
reducer就是暴露出一个方法出去。
const defaultState = {
    value : 'write....',
    list: [
        'hello',
        'world',
        'nihao'
    ]
}
export default (state = defaultState, action) => {
    return state
}
APP.js代码:
class App extends Component {
  constructor(props)
  {
    super(props);
    console.log(store.getState());    
  }
  render(){
    return(
      <div>
        <p>hello world</p>
      </div>
    )
  }
}
export default App;
执行结果:











