太原网站建设vhuashi/国内新闻今日头条

一、介绍

        列表页是常用的功能，从后端获取列表数据，刷新到页面上。开发列表页需要考虑以下技术要点:1.如何翻页；2.如何进行内容搜索；3.何时进行页面刷新。

二、使用教程

1.user-service

根据用户id获取用户列表，返回的state包括列表响应，加载状态，请求错误等信息。

const useFetchUserList = () => {// useRequest Hookconst [state, doRequest] = useRequest();// useAuth hookconst [user] = useAuth(); // 发起请求const fetch = (userId, page, pageSize) => doRequest('http://vicyor.com/user/'+userId, {page:page,pageSize:pageSize},{authorization:user.token}, 'POST' );// 返回结果return {state, fetch}
}

demo

export const ListPage = () =>{const [search, setSearch] = useState('');const [page, setPage] = useState(1); const [pageSize, setPageSize] = useState(10);const [state, fetch] = useFetchUserList();const handleSearch = keyword => fetch(keyword, page, pageSize);useEffect( () => {fetch('', 1, pageSize);},[])    return (<><div><h2>User List</h2><Input.Searchvalue={search}onChange={e => setSearch( e.target.value )}onSearch={handleSearch}/><TabledataSource={state.data}columns={getColumns()}rowKey="id"loading={state.isLoading}error = {state.error}pagination={true}/><Paginationcurrent={page}total={state.total}update = {setPage, setPageSize}/></div></>);}

2. province-city-service

省份和城市服务，选择省份后选择对应的城市

const useProvinceAndCity = () => {const [fetchProvince, provincesState] =  useRequest('http://vicyor.com/province/list',{},{},'GET');const [fetchCitys, citysState] = useRequest('http://vicyor.com/' + province + '/cityes', {}, {}, 'POST');return {fetchProvince, fetchCitys, provincesState, citysState};}

demo

const CitySelector = () => {const [selectedProvince, setSelectedProvince] = useState('');const [selectedCity, setSelectedCity] = useState('');const [fetchProvince, fetchCitys, provincesState, citysState] = useProvinceAndCitys();// 初始加载所有省份useEffect(() => {fetchProvince();},[])const handleProvinceChange = (e) => {setSelectedProvince(e.target.value);// 加载所有城市fetchCitys(selectedProvince);};const handleCityChange = (e) => {setSelectedCity(e.target.value);};return (<div><select value={selectedProvince} onChange={handleProvinceChange}><option value ="">请选择省份<option>provincesState.res && provincesState.res.map(province => <option value= {province.name}>{province.name}</option>)</select><select value={selectedCity} onChange={handleCityChange}><option value="">请选择城市</option>citysState.res && citysState.res.map(city => <option value = {city.name}>{city.name}</city></select></div>);
};