Сделали несколько страниц с отложенной загрузкой

package-lock.json

@@ -9,7 +9,8 @@
       "version": "0.0.0",
       "dependencies": {
         "react": "^19.1.0",
-        "react-dom": "^19.1.0"
+        "react-dom": "^19.1.0",
+        "react-router-dom": "^7.17.0"
       },
       "devDependencies": {
         "@eslint/js": "^9.25.0",
@@ -1600,6 +1601,19 @@
       "dev": true,
       "license": "MIT"
     },
+    "node_modules/cookie": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/cookie/-/cookie-1.1.1.tgz",
+      "integrity": "sha512-ei8Aos7ja0weRpFzJnEA9UHJ/7XQmqglbRwnf2ATjcB9Wq874VKH9kfjjirM6UhU2/E5fFYadylyhFldcqSidQ==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=18"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/express"
+      }
+    },
     "node_modules/cross-spawn": {
       "version": "7.0.6",
       "resolved": "https://registry.npmjs.org/cross-spawn/-/cross-spawn-7.0.6.tgz",
@@ -2471,6 +2485,44 @@
         "node": ">=0.10.0"
       }
     },
+    "node_modules/react-router": {
+      "version": "7.17.0",
+      "resolved": "https://registry.npmjs.org/react-router/-/react-router-7.17.0.tgz",
+      "integrity": "sha512-FDELK7rTMlCHO5+reyXsPlmfr7N1F91lPHsWYfMEGQm/KQ+F4JFM8jGoeQDmDvdTs93Fw9aSilH+uKRb4/jXvQ==",
+      "license": "MIT",
+      "dependencies": {
+        "cookie": "^1.0.1",
+        "set-cookie-parser": "^2.6.0"
+      },
+      "engines": {
+        "node": ">=20.0.0"
+      },
+      "peerDependencies": {
+        "react": ">=18",
+        "react-dom": ">=18"
+      },
+      "peerDependenciesMeta": {
+        "react-dom": {
+          "optional": true
+        }
+      }
+    },
+    "node_modules/react-router-dom": {
+      "version": "7.17.0",
+      "resolved": "https://registry.npmjs.org/react-router-dom/-/react-router-dom-7.17.0.tgz",
+      "integrity": "sha512-fyU2yjGups/hE6Xz0I5ZYbVL8Gx29eCjgpHaRaTaVU+OOAdfRX05KsvyRm0GO8YQwOkhpU3MurW1jyMUJn+zSw==",
+      "license": "MIT",
+      "dependencies": {
+        "react-router": "7.17.0"
+      },
+      "engines": {
+        "node": ">=20.0.0"
+      },
+      "peerDependencies": {
+        "react": ">=18",
+        "react-dom": ">=18"
+      }
+    },
     "node_modules/resolve-from": {
       "version": "4.0.0",
       "resolved": "https://registry.npmjs.org/resolve-from/-/resolve-from-4.0.0.tgz",
@@ -2544,6 +2596,12 @@
         "semver": "bin/semver.js"
       }
     },
+    "node_modules/set-cookie-parser": {
+      "version": "2.7.2",
+      "resolved": "https://registry.npmjs.org/set-cookie-parser/-/set-cookie-parser-2.7.2.tgz",
+      "integrity": "sha512-oeM1lpU/UvhTxw+g3cIfxXHyJRc/uidd3yK1P242gzHds0udQBYzs3y8j4gCCW+ZJ7ad0yctld8RYO+bdurlvw==",
+      "license": "MIT"
+    },
     "node_modules/shebang-command": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/shebang-command/-/shebang-command-2.0.0.tgz",

package.json

@@ -4,14 +4,15 @@
   "version": "0.0.0",
   "type": "module",
   "scripts": {
-    "dev": "vite", 
+    "dev": "vite",
     "build": "vite build",
     "lint": "eslint .",
     "preview": "vite preview"
   },
   "dependencies": {
     "react": "^19.1.0",
-    "react-dom": "^19.1.0"
+    "react-dom": "^19.1.0",
+    "react-router-dom": "^7.17.0"
   },
   "devDependencies": {
     "@eslint/js": "^9.25.0",

src/App.jsx

@@ -1,59 +1,28 @@
-import React from 'react'
+import { Suspense, lazy } from 'react'
+import { BrowserRouter, Routes, Route } from 'react-router-dom'
 
-class RandomUser extends React.Component {
-    constructor(props) {
-        super(props)
-        this.state = { user: {} }
-    }
-    
-    componentDidMount() {
-        fetch('https://randomuser.me/api')
-        .then(responce => responce.json())
-        .then(json => this.setState({ user: json.results[0] }));
-        console.log('смонтирован')
-    }
-    
-    componentDidUpdate(prevProps,prevState) {
-        console.log(this.state);
-        console.log('Компонент обнвлен')
-    }
-    
-    componentWillUnmount() {
-        console.log('Компонент таймера размонтирован')
-    }
-    
-    render() {
-        return <div>
-            {this.state.user && 
-                this.state.user.name &&
-                (
-                <>
-                    <h2>{this.state.user.name.first} {this.state.user.name.last}</h2>
-                    <img src={this.state.user.picture.medium} />
-                    <button onClick={() => {
-                        console.log('Загружаем ... ')
-                        fetch('https://randomuser.me/api')
-                        .then(responce => responce.json())
-                        .then(json => this.setState({ user: json.results[0] }));
-                    }}>Загрузить нового</button>
-                </>
-                )
-            }
-            </div>
-    }
-}
+const HomePage = lazy(() => import('./pages/HomePage'))
+const AboutPage = lazy(() => import('./pages/AboutPage'))
+const ContactPage = lazy(() => import('./pages/ContactPage'))
+const AdminPanel = lazy(() => import('./pages/AdminPanel'))
 
 function App() {
-    const [showClock, setShowClock] = React.useState(true);
-    
 	return (
-		<>
-			<h1>Домашнее задание: жизненый цикл</h1>
-            <button onClick={()=> setShowClock(!showClock)}>
-                {showClock ? 'Скрыть часы' : 'Показать часы' }
-            </button>
-            {showClock && <RandomUser />}
-		</>
+		<BrowserRouter>
+		    <div>
+                <nav><a href='/'>Главная</a> <a href='/about'>О нас</a> <a href='/contact'>Контакты</a></nav>
+                <main>
+                    <Suspense fallback={<div>Загрузка ...</div>}>
+                        <Routes>
+                            <Route path='/' element={<HomePage />} />
+                            <Route path='/about' element={<AboutPage />} />
+                            <Route path='/contact' element={<ContactPage />} />
+                            <Route path='/admin' element={<AdminPanel />} />
+                        </Routes>
+                    </Suspense>
+                </main>
+		    </div>
+		</BrowserRouter>
 	)
 }
 

src/main.jsx

@@ -4,5 +4,7 @@ import { createRoot } from 'react-dom/client'
 import App from './App.jsx'
 
 createRoot(document.getElementById('root')).render(
+	<StrictMode>
 		<App />
+	</StrictMode>
 )

src/pages/AboutPage.jsx

@@ -0,0 +1,9 @@
+export function MyComponent() {
+    return (
+        <>
+        <h1>About Page</h1>
+        </>
+        )
+}
+
+export default MyComponent

src/pages/AdminPanel.jsx

@@ -0,0 +1,9 @@
+export function MyComponent() {
+    return (
+        <>
+        <h1>Admin Page</h1>
+        </>
+        )
+}
+
+export default MyComponent

src/pages/ContactPage.jsx

@@ -0,0 +1,9 @@
+export function MyComponent() {
+    return (
+        <>
+        <h1>Contact Page</h1>
+        </>
+        )
+}
+
+export default MyComponent

src/pages/HomePage.jsx

@@ -0,0 +1,9 @@
+export function MyComponent() {
+    return (
+        <>
+        <h1>Home Page</h1>
+        </>
+        )
+}
+
+export default MyComponent