如何找到山东省住房城乡建设厅的官方网站并了解其首页内容？
摘要：流程图 网站,山东省住房城乡建设厅网站首页,页面设计怎么弄,网站首页被降权目录 react 10之状态管理工具2 redux storeindex.js 入口文件actionType.js actions常量的文件rootReduce
流程图 网站,山东省住房城乡建设厅网站首页,页面设计怎么弄,网站首页被降权目录 react 10之状态管理工具2 redux store / index.js 入口文件actionType.js actions常量的文件rootReducer.js 总的reducer 用于聚合所有模块的 reducerrootSaga.js 总的saga 用于聚合所有模块的 sagastore / form / formActions.js 同步修改 isShowstore / form / formRedu… 目录 react 10之状态管理工具2 redux store / index.js 入口文件actionType.js actions常量的文件rootReducer.js 总的reducer 用于聚合所有模块的 reducerrootSaga.js 总的saga 用于聚合所有模块的 sagastore / form / formActions.js 同步修改 isShowstore / form / formReducer.js 同步修改 isShowstore / list / listActions.js 同步与异步修改 count、arrstore / list / listReducer.js 同步与异步修改 count、arrstore / list / listSaga.js 同步与异步修改 count、arr ( 获取最新的count和arr )store / test / testActions.js 被add的异步修改了数据store / test / testReducer.js 被add的异步修改了数据index.js 项目入口文件引入7redux/3使用saga/app.jsx效果 react 10之状态管理工具2 redux npm install redux react-redux npm i redux-saga redux-saga redux-saga是一个Redux的中间件它允许你在Redux中编写异步的action creators。
store / index.js 入口文件
import { applyMiddleware, legacy_createStore } from redux;
import createSagaMiddleware from redux-saga;
import rootReducer from ./rootReducer;
import rootSaga from ./rootSaga;const sagaMiddleware createSagaMiddleware();const store legacy_createStore(rootReducer, applyMiddleware(sagaMiddleware));sagaMiddleware.run(rootSaga);export default store;actionType.js actions常量的文件
// actionType.js 常量 唯一标识 标记当前action的唯一性
export const FORM_ADD_COUNT form_addCount
export const FORM_SUB_COUNT form_subCount
export const LIST_CHANGE_IsSHOW list_change_isShowexport const TEST_CHANGE_ARR test_change_arrrootReducer.js 总的reducer 用于聚合所有模块的 reducer
// rootReducer.js 总的reducer 用于聚合所有模块的 reducer
import { combineReducers } from redux;
import formReducer from ./form/formReducer;
import listReducer from ./list/listReducer;
import testReducer from ./test/testReducer;const rootReducer combineReducers({list: listReducer,form: formReducer,test: testReducer
});export default rootReducer;rootSaga.js 总的saga 用于聚合所有模块的 saga
// rootSaga.js 总的saga 用于聚合所有模块的 saga
import { all } from redux-saga/effects;
import watchListActions from ./list/listSaga;function* rootSaga() {yield all([watchListActions()]);
}export default rootSaga;store / form / formActions.js 同步修改 isShow
// formActions.js
import { LIST_CHANGE_IsSHOW } from ../actionType;
export const list_changeShow () ({type: LIST_CHANGE_IsSHOW,
});
store / form / formReducer.js 同步修改 isShow
// formReducer.js
import { LIST_CHANGE_IsSHOW } from ../actionType;
const initialState {isShow: false
};const formReducer (state initialState, action) {switch (action.type) {case LIST_CHANGE_IsSHOW:return { ...state, isShow: !state.isShow };default:return state;}
};export default formReducer;store / list / listActions.js 同步与异步修改 count、arr
// listActions.js
import { FORM_ADD_COUNT, FORM_SUB_COUNT } from ../actionType;
export const form_addCount () ({type: FORM_ADD_COUNT
});export const form_subCount () ({type: FORM_SUB_COUNT
});store / list / listReducer.js 同步与异步修改 count、arr
// listReducer.js
import { FORM_ADD_COUNT, FORM_SUB_COUNT } from ../actionType;
const initialState {count: 0
};const listReducer (state initialState, action) {switch (action.type) {case FORM_ADD_COUNT:return { ...state, count: state.count 1 };case FORM_SUB_COUNT:return { ...state, count: state.count - 1 };default:return state;}
};export default listReducer;store / list / listSaga.js 同步与异步修改 count、arr ( 获取最新的count和arr )
// listSaga.js
import { delay, put, select, takeEvery } from redux-saga/effects;
import { FORM_ADD_COUNT, FORM_SUB_COUNT, TEST_CHANGE_ARR } from ../actionType;function* form_addCountAsync() {// 异步操作例如发送网络请求等yield console.log(add count...,)// const currentCount yield select((state) state.list.count);// console.log(currentCount,currentCount); // 获取到count最新的值 可以用于发起异步请求啥的yield delay(2000); // 延迟2s后 再触发 TEST_CHANGE_ARRlet currentArrLength yield select((state) state.test.arr)currentArrLength currentArrLength?.length 1console.log(currentArrLength,currentArrLength);yield put({ type: TEST_CHANGE_ARR ,payload:我是- currentArrLength}); // 修改test模块的 arr数据
}function* form_subCountAsync() {// 异步操作例如发送网络请求等yield console.log(sub count...);
}function* watchListActions() {yield takeEvery(FORM_ADD_COUNT, form_addCountAsync);yield takeEvery(FORM_SUB_COUNT, form_subCountAsync);
}export default watchListActions;store / test / testActions.js 被add的异步修改了数据
// testActions.js
import { TEST_CHANGE_ARR } from ../actionType;
export const test_change_arr () ({type: TEST_CHANGE_ARR,
});
store / test / testReducer.js 被add的异步修改了数据
// testReducer.js
import { TEST_CHANGE_ARR } from ../actionType;
const initialState {arr: []
};const testReducer (state initialState, action) {console.log(action,action);switch (action.type) {case TEST_CHANGE_ARR:return { ...state, arr: [...state.arr,action.payload] };default:return state;}
};export default testReducer;index.js 项目入口文件引入
import React from react;
import ReactDOM from react-dom/client;
import { Provider } from react-redux;
import App from ./7redux/3使用saga/app;
import store from ./store/index.js;
const root ReactDOM.createRoot(document.getElementById(root));
root.render(Provider store{store}App //Provider
);7redux/3使用saga/app.jsx
import React from react;
import { connect } from react-redux;
import { list_changeShow } from ../../store/form/formActions;
import { form_addCount, form_subCount } from ../../store/list/listActions;class App extends React.Component {render() {// console.log(this.props,this.props);const { count, isShow, form_subCount, form_addCount, list_changeShow,arr } this.props;return (divpCount: {count}/pbutton onClick{form_addCount}addcount/buttonbutton onClick{form_subCount}Decrement/buttonpisShow: {isShow ? True : False}/pbutton onClick{list_changeShow}Toggle Show/buttonparr: {arr}/p/div);}
}const mapStateToProps (state) ({count: state.list.count,isShow: state.form.isShow,arr: state.test.arr,
});const mapDispatchToProps {form_addCount,form_subCount,list_changeShow
};export default connect(mapStateToProps, mapDispatchToProps)(App);效果