react 路由创建与使用
1, 安装路由
npm i react-router-dom
2，路由组件 createBrowserRouter
// router/index.js
import { createBrowserRouter } from "react-router-dom"import Home from '../page/home'
import New from '../page/new'const router = createBrowserRouter([{path: '/',element: <Home />},{path: '/new',element: <New />},// 404路由配置{path: '*',element: <NotFound />}
])
export default router
3，使用路由
//index.js
import router from './router'
import { RouterProvider } from 'react-router-dom'root.render(// <React.StrictMode><RouterProvider router={router}></RouterProvider>// </React.StrictMode>
)
4，声明式导航
import { Link } from "react-router-dom"
<Link to='/new'>new</Link>
5，编程式导航
import { useNavigate } from "react-router-dom"
// 执行navigate
const navigate = useNavigate()// 使用
<span onClick={() => navigate('/')}>跳转到首页</span>
6，传参
// ====SearchParams======
<span onClick={() => navigate('/home?id=100&name=json')}>跳转到首页</span>
import { useSearchParams } from "react-router-dom"
const [params] = useSearchParams()
const id = params.get('id')
// ====params======
path: '/new/:id',// 路由添加占位符
<span onClick={() => navigate('/new/1000')}>跳转到首页</span>
import { useParams } from "react-router-dom"
const params = useParams ()
const id = params.id
7,嵌套路由
// 使用children属性配置嵌套关系
{path: '/',element: <Layout />,children: [{// path: '',index: true,// index设置为true 默认展示这个二级路由element: <Lxx />},]
}
// 使用<Outlet />组件配置二级路由渲染位置
const Layout = () => {return (<div><Link to="page1">page1</Link><Link to="page2">page2</Link>{/*二级路由出口*/}<Outlet /></div>)
}