它必须是第二个参数
createStore：
const rootReducer = combineReducers({ todos: todos, visibilityFilter: visibilityFilter});const initialState = { todos: [{id:123, text:'hello', completed: false}] };const store = createStore( rootReducer, initialState);
它必须是第二个参数
createStore：
const rootReducer = combineReducers({ todos: todos, visibilityFilter: visibilityFilter});const initialState = { todos: [{id:123, text:'hello', completed: false}] };const store = createStore( rootReducer, initialState);名师互学网 版权所有 (c)2021-2022 ICP备案号：晋ICP备2021003244-6号
