初入Redux 使用combineReducers函数（四）

      //这里增加了 combineReducers
      const {createStore,combineReducers}=Redux


      //替换前
      /*
      const todoApp=(state={},action)=>{
        console.log('==================我又运行了==================');
        console.log(state.todos);
        console.log(state.visibilityFillter);
        console.log('====================================');
        return{
          todos:todos(
            state.todos,
            action
          ),
          visibilityFillter:
            visibilityFillter(
              state.visibilityFillter,
              action
            )
        }
      }
      */

      //替换之后   (下一章我们实现一个combineReducers)

      const todoApp=combineReducers({
        todos:todos,
        visibilityFillter:visibilityFillter
      })

本章请参考源码以便更好的理解Redux

    这是最终的打印。