概述
react-router V4 相對於react-router V2 or V3 幾乎是重寫了, 新版的react-router更偏向於組件化(everything is component)。
V4
汲取了很多思想,路由即是組件,使路由更具聲明式,且方便組合。如果你習慣使用react
,那么一定會很快上手新版的react-router
。
react-router V4 被一分為三: react-router-dom
(for web)、react-router-native
(for native)、react-router
(core)。但如果僅在瀏覽器中使用的話,一般只需要用到react-router-dom
就可以了。
改動點
1. Router/Route 的改變
// V2 or V3 import { Router, Route, hashHistory } from 'react-router'; <Router history={hashHistory}> <Route path='/foo' component={Foo} /> <Route path='/bar' component={Bar} /> </Router>
// V4 Router組件里只能渲染一個組件 import { HashRouter as Router, Route } from 'react-router-dom'; <Router> <div> <Route path='/foo' component={Foo} /> <Route path='/bar' component={Bar} /> </div> </Router>
2. 組件嵌套
// V2 or V3 路由組件嵌套 import { Router, Route, hashHistory } from 'react-router'; <Router history={hashHistory}> <Route path='/' component={App}> <Route path='foo' component={Foo} /> <Route path='bar' component={Bar} /> </Route> </Router>
// V4 Router 的路由組件嵌套 import { HashRouter as Router, Route, Switch } from 'react-router-dom'; <Router> <Route path="/" component={(props) => ( <App {...props}> <Switch> <Route path='/foo' component={Foo} /> <Route path='/bar' component={Bar} /> </Switch> </App> )}/> </Router>
3. 路由的生命周期
在react-router V4
中去掉了on****
的路由生命周期的鈎子,但是你可以在組件中用componentDidMount
或 componentWillMount
代替 onEnter
,可以用componentWillUpdate
或 componentWillReceiveProps
代替 onUpdate
,你可以用componentWillUnmount
代替 onLeave
。
4. Link
// V2 or V3 import { Link } from 'react-router'; // V4 import { Link } from 'react-router-dom';
5. history.push and history.replace
// V2 or V3 history.push({ pathname: '/home', query: { foo: 'test', bar: 'temp' } }); history.replace({ pathname: '/home', query: { foo: 'test', bar: 'temp' } }); // V4 history.push({ pathname: '/home', search: '?foo=test&bar=temp', }); history.replace({ pathname: '/home', search: '?foo=test&bar=temp', });
6. props.params
// V2 or V3 獲取params可以這么獲取 this.props.params // V4 this.props.match.params
7. location.query
// V2 or V3 獲取query可以這么獲取 this.props.location.query // V4 去掉了location.query,只能使用search來獲取,為了讓其跟瀏覽器一樣 // 如果想要兼容以前的location.query,可以使用query-string庫解析一下 // 如: queryString.parse(props.location.search) this.props.location.search
8. location.action
// V2 or V3 獲取location的action this.props.location.action // V4 去掉了location.action, 放在了history里面 history.action
9.關於history
以前獲取react-router里面的history庫,可以這么獲取:
import {hashHistory as history} from 'react-router';
react-router V4:
import createHashHistory as history from 'history/createHashHistory';
兼容處理
因為要從react-router V2
完全遷移到react-router V4
工作量還是挺大的,一下子難以完全遷移,所以對某些地方做了兼容處理。
history
import _ from 'lodash'; import queryString from 'query-string'; function processHistory(history) { const _push = history.push; const _replace = history.replace; history.push = function (one) { if (!_.isPlainObject(one)) { return _push.apply(this, arguments); } const o = Object.assign({}, one); if (o.query) { o.search = queryString.stringify(o.query); } _push.apply(this, [o]); }; history.replace = function (one) { if (!_.isPlainObject(one)) { return _replace.apply(this, arguments); } const o = Object.assign({}, one); if (o.query) { o.search = queryString.stringify(o.query); } _replace.apply(this, [o]); }; return history; } export default processHistory;
props
import queryString from 'query-string'; const processReactRouterProps = (props) => { const newProps = Object.assign({}, props); newProps.location.query = queryString.parse(props.location.search); newProps.location.action = newProps.history.action; newProps.params = props.match.params || {}; // 不止 || 是否有意義 return newProps; } export default processReactRouterProps;
參考資料: