[英]How to setup Routes using React Router in my ReactJS app?
我對 react-router 有一些問題。 當我點擊id
時,它不會 go Edit
頁面。 id
在 URL 中,但它什么也沒做。
const Main = (props) => {
const { pathname } = props.location;
return (
<Fragment>
<div>
<div className="container">
<Header />
{pathname === "/create" ? <Create /> : null}
{pathname === '/edit/:id' ? <Edit /> : null}
{pathname === "/" ? <Home /> : null}
</div>
</div>
</Fragment>
);
};
export default withRouter(Main);
應用程序.js:
require('./components/Index');
import React from 'react'
import ReactDOM from "react-dom"
import Index from "./components/Index";
import { BrowserRouter as Router} from "react-router-dom";
import { ToastContainer } from 'react-toastify';
const App =() =>{
}
if (document.getElementById('app')) {
ReactDOM.render(<Router> <Index /> <ToastContainer /></Router>, document.getElementById('app'));
}
index.js:
import React from "react";
import { Route, Switch } from "react-router-dom";
import Main from "./CRUD/Main";
import Create from "./CRUD/Create";
import Edit from "./CRUD/Edit";
import Home from "./CRUD/Home";
const Index = (props) => {
return (
<Main>
<Switch>
<Route path="/Create" component={Create} />
<Route path='/edit/:id' component={Edit} />
<Route exact path="/" component={Home} />
</Switch>
</Main>
);
};
export default Index;
我認為main.js
與pathname
有一些問題。
使用react-router時,您不需要像在Main
中那樣進行條件渲染。 Switch
將自動渲染與該位置匹配的第一個子<Route>
或<Redirect>
。
因此,您需要從路由器組件(即Index
)中刪除Main
,使其如下所示:
const Index = (props) => {
return (
<>
<NavBar /> {/* NavBar is optional, I just added for example */}
<Switch>
<Route path="/create" component={Create} />
<Route path="/edit/:id" component={Edit} />
<Route exact path="/" component={Home} />
</Switch>
</>
);
}
NavBar: ( Link
s; 僅用於示例)
function NavBar() {
return (
<ul>
<li>
<Link to="/create">Go to create</Link>
</li>
<li>
<Link to="/edit/123">Go to edit with id = 123</Link>
</li>
<li>
<Link to="/">Go to home</Link>
</li>
</ul>
);
}
現在,當您單擊上述鏈接時,它會自動將您帶到相關組件(如路由中聲明的那樣,即Index
)。 (無需手動條件檢查)
例如,要使用useParams鈎子在Edit
組件中檢索URL 參數,即id
:
function Edit() {
const { id } = useParams<{ id: string }>(); // Remove <{ id: string }> if not using TypeScript
return <h2>Edit, {id}</h2>;
}
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