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react实现内部链接

2026-01-26 22:41:43React

使用 React Router 实现内部链接

React 应用中实现内部链接通常依赖 react-router-dom 库，以下是具体实现方法：

安装依赖

npm install react-router-dom

基本路由配置

import { BrowserRouter as Router, Routes, Route, Link } from 'react-router-dom';

function App() {
  return (
    <Router>
      <nav>
        <Link to="/">Home</Link>
        <Link to="/about">About</Link>
      </nav>
      <Routes>
        <Route path="/" element={<Home />} />
        <Route path="/about" element={<About />} />
      </Routes>
    </Router>
  );
}

动态路由与参数传递

带参数的路由

<Route path="/user/:id" element={<UserProfile />} />

获取路由参数

import { useParams } from 'react-router-dom';

function UserProfile() {
  const { id } = useParams();
  return <div>User ID: {id}</div>;
}

编程式导航

使用 useNavigate 钩子

import { useNavigate } from 'react-router-dom';

function LoginButton() {
  const navigate = useNavigate();
  return (
    <button onClick={() => navigate('/dashboard')}>
      Login
    </button>
  );
}

嵌套路由实现

子路由配置

<Route path="/products" element={<Products />}>
  <Route path=":productId" element={<ProductDetail />} />
</Route>

在父组件中渲染子路由

import { Outlet } from 'react-router-dom';

function Products() {
  return (
    <div>
      <h2>Products List</h2>
      <Outlet />  {/* 子路由将在此渲染 */}
    </div>
  );
}

链接样式优化

激活状态样式

<NavLink 
  to="/about" 
  style={({ isActive }) => 
    isActive ? { color: 'red' } : undefined
  }
>
  About
</NavLink>

路由守卫实现

保护路由示例

function PrivateRoute({ children }) {
  const isAuthenticated = checkAuth();
  return isAuthenticated ? children : <Navigate to="/login" />;
}

<Route 
  path="/dashboard" 
  element={
    <PrivateRoute>
      <Dashboard />
    </PrivateRoute>
  }
/>

路由懒加载

动态导入组件

const About = lazy(() => import('./About'));

<Routes>
  <Route path="/about" element={
    <Suspense fallback={<div>Loading...</div>}>
      <About />
    </Suspense>
  }/>
</Routes>

react实现内部链接