Сделали компонент с фотографией

src/App.jsx

@@ -1,44 +1,58 @@
-import { useMutation, QueryClientProvider, QueryClient } from '@tanstack/react-query'
-import PostAddForm from './components/PostAddForm'
+import React from 'react'
 
-/*
-const mutation = useMutation({
-    mutationFn: newUser => {
-        fetch('https://jsonplaceholder.typicode.com/users', {
-            method: 'GET',
-            headers: {'Content-type':'application/json'},
-            body: JSON.stringify(newUser),
-        }).then(res => res.json())
+class RandomUser extends React.Component {
+    constructor(props) {
+        super(props)
+        this.state = { user: {} }
     }
-})
-*/
-
-const createQueryClient = () => {
-    new QueryClient({
-        defaultOptions: {
-            queries: {
-                staleTime: 5 * 60*1000,
-                retry: 1,
-                gcTime: 10*60*1000,
-                refetchOnWindowFocus: false,
-            },
-            mutations: {
-                retry:0,
-                onError: error => {console.error('Mutation error:',error.message)}
+    
+    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>
+    }
 }
 
 function App() {
+    const [showClock, setShowClock] = React.useState(true);
+    
 	return (
 		<>
-			{/* Добавьте тестовый контент для проверки */}
-			<h1>Hello, React!</h1>
-        <QueryClientProvider client={createQueryClient}>
-            <PostAddForm />
-        </QueryClientProvider>
-            
+			<h1>Домашнее задание: жизненый цикл</h1>
+            <button onClick={()=> setShowClock(!showClock)}>
+                {showClock ? 'Скрыть часы' : 'Показать часы' }
+            </button>
+            {showClock && <RandomUser />}
 		</>
 	)
 }

src/main.jsx

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