react 之 ReactRouter

1.创建路由开发环境

# 使用CRA创建项目
npm create-react-app react-router-pro

# 安装最新的ReactRouter包
npm i react-router-dom

# 启动项目
npm run start

2.基础路由

//index.js
import React from 'react'
import ReactDOM from 'react-dom/client'
const router = createBrowserRouter([
  {
    path:'/login',
    element: <div>登录</div>
  },
  {
    path:'/article',
    element: <div>文章</div>
  }
])
ReactDOM.createRoot(document.getElementById('root')).render(
  <RouterProvider router={router}/>
)

3.抽象路由模块

1.router下index.js文件

import Login from '../page/Login'
import Article from '../page/Article'
import { createBrowserRouter, createHashRouter } from 'react-router-dom'

const router = createBrowserRouter([
  {
    path: '/login',
    element: <Login />
  },
  {
    path: '/article/:id/:name',
    element: <Article />
  }
])

console.log(router)
export default router

2.index.js文件

import React from 'react'
import ReactDOM from 'react-dom/client'
import './index.css'
import reportWebVitals from './reportWebVitals'
import { RouterProvider } from 'react-router-dom'
// 1. 导入路由router
import router from './router'
const root = ReactDOM.createRoot(document.getElementById('root'))
root.render(
  <React.StrictMode>
    {/* 2. 路由绑定 */}
    <RouterProvider router={router}></RouterProvider>
  </React.StrictMode>
)
reportWebVitals()

4.路由导航跳转

import { Link, useNavigate } from 'react-router-dom'
const Login = () => {
  const navigate = useNavigate()
  return (
    <div>
      我是登录页
      {/* 声明式的写法 */}
      <Link to="/article">跳转到文章页</Link>
      {/* 命令式的写法（编程式导航 */}
      <button onClick={() => navigate('/article')}>跳转到文章页</button>
      <button onClick={() => navigate('/article?id=1001&name=jack')}>searchParams传参</button>
      <button onClick={() => navigate('/article/1001/jack')}>params传参</button>
    </div>
  )
}

export default Login

import { useParams, useSearchParams } from "react-router-dom"

const Article = () => {
  // const [params] = useSearchParams()
  // const id = params.get('id')
  // const name = params.get('name')

  const params = useParams()
  const id = params.id
  const name = params.name
  return <div>我是文章页{id}-{name}</div>
  /*
    需要在router下的index.js文件
  {
    path: '/article/:id/:name',
    element: <Article />
  },
  */
}

export default Article

5.嵌套路由配置

import Login from '../page/Login'
import Article from '../page/Article'
import Layout from '../page/Layout'
import Board from '../page/Board'
import About from '../page/About'
import NotFound from '../page/NotFound'

import { createBrowserRouter, createHashRouter } from 'react-router-dom'

const router = createBrowserRouter([
  {
    path: '/',
    element: <Layout />,
    children: [
      // 设置为默认二级路由 一级路由访问的时候，它也能得到渲染
      {
        index: true,
        element: <Board />
      },
      {
        path: 'about',
        element: <About />
      }
    ]
  },
  {
    path: '/login',
    element: <Login />
  },
  {
    path: '/article/:id/:name',
    element: <Article />
  },
  {
    path: '*',
    element: <NotFound />
  }
])

console.log(router)

export default router

import { Link, Outlet } from "react-router-dom"

const Layout = () => {
  return (
    <div>
      我是一级路由layout组件
      <Link to="/">面板</Link>
      <Link to="/about">关于</Link>
      {/* 配置二级路由的出口 */}
      <Outlet />
    </div>
  )
}

export default Layout

6.默认二级路由配置

7.404路由配置

8.reactRouter两种路由模式