react專案—路由和巢狀子路由(react-router4.0)
前言:在做專案的時候,花費了幾天的時間才把路由問題解決,但是對react的幾種路由的區分和使用,我現在也是整的還不清楚。
1、安裝相關的包:
(1)npm install --save-dev react-router
(2)npm install --save-dev react-router-dom
(3)npm install --save react-router-config
在package.json中檢視版本
2、配置路由
(1)新建路由檔案 route.js
程式碼如下所示:
import React from 'react'; import FyOfficalHomePage from './components/FyOfficalHomePage/FyOfficalHomePage'; import FyAdvantage from './components/FyAdvantage/FyAdvantage'; import FyAdvantageOne from './components/FyAdvantage/FyAdvantageOne/FyAdvantageOne'; import FyAdvantageTwo from './components/FyAdvantage/FyAdvantageTwo/FyAdvantageTwo'; import FyAdvantageThree from './components/FyAdvantage/FyAdvantageThree/FyAdvantageThree'; import FyCommonProblem from './components/FyCommonProblem/FyCommonProblem'; import FyCompanyPosition from './components/FyCompanyPosition/FyCompanyPosition'; const routes = [ { path: '/', component: FyOfficalHomePage, exact: true, }, { path: '/advantage', component: FyAdvantage, children: [ { path: '/advantage/advantage1', component: FyAdvantageOne }, { path: '/advantage/advantage2', component: FyAdvantageTwo }, { path: '/advantage/advantage3', component: FyAdvantageThree } ] }, { path: '/faq', component: FyCommonProblem }, { path: '/map', component: FyCompanyPosition }, ]; export {routes}
注:(1)exact:
是Route下的一條屬性,一般而言,react路由會匹配所有匹配到的路由組價,exact能夠使得路由的匹配更嚴格一些。
值為bool型,為true是表示嚴格匹配,為false時為正常匹配。
如在exact為true時,’/link’與’/’是不匹配的,但是在false的情況下它們又是匹配的。
(2)巢狀子路由children,這裡說明一下不一定必須用children,你可以用其它的詞代替。但是我個人覺得,children辨識度 高,在後面使用的時候也不會搞混。
(2)index.js檔案
import React from 'react'; import ReactDOM from 'react-dom'; import './index.css'; import registerServiceWorker from './registerServiceWorker'; import { routes } from './routes'; import { BrowserRouter } from 'react-router-dom'; import { renderRoutes } from 'react-router-config'; ReactDOM.render( (<BrowserRouter> {renderRoutes(routes)} </BrowserRouter>), document.getElementById('root') ); registerServiceWorker();
(3)元件中使用
import React from 'react';
import { Link } from 'react-router-dom';
export default class NavigationBar extends React.Component {
constructor(props) {
super(props);
this.state = {}
}
render (){
return(
<div>
<ul>
<li>
<Link to="/">首頁</Link>
</li>
<li>
<Link to="/advantage">advantage</Link>
</li>
</ul>
</div>
)
}
}
子路由(子頁面):
import React from 'react';
import { Link } from 'react-router-dom';
import { renderRoutes } from 'react-router-config'
export default class FyAdvantage extends React.Component {
constructor(props) {
super(props);
this.state = {
route: props.route,
}
}
render (){
const route = this.state.route;
return(
<div>
{renderRoutes(route.children)}
<div>
<ul>
<li>
<Link to="/advantage/advantage1">advantage1</Link>
</li>
<li>
<Link to="/advantage/advantage2">advantage2</Link>
</li>
<li>
<Link to="/advantage/advantage3">advantage3</Link>
</li>
</ul>
</div>
</div>
)
}
}
注:(1)接受通過props傳過來的route
(2){renderRoutes(route.children)}是子頁面的入口,子頁面是在原來的頁面的基礎載入的,
例:A是父頁面,B和C是A的子頁面。B、C是A的一部分,在載入B或C頁面的時候,父頁面A的內容依然存在,B或C 的頁面內容通過入口渲染在A頁面中。