[React] 리액트 입문 / 버튼 클릭하면 숫자가 변경되는 컴포넌트

// Test.tsx

import { useState } from "react";

const Test = () => {
  const [click, setClick] = useState<number>(0); // 클릭 수를 저장하는 상태 변수

  function handleClick() {
    setClick(click + 1); // 클릭 수를 1 증가시킴
  }

  return (
    <div className="test">
      <div>버튼을 클릭하면 숫자가 변경됩니다</div>
      <div>
        <button onClick={handleClick}>{click}번 클릭됨</button> {/* 클릭 수를 표시하는 버튼 */}
      </div>
    </div>
  );
};

export default Test;

// App.tsx

import React from "react";
import "./App.css";
import { Route, Routes } from "react-router-dom";
import Post from "./components/Post";
import Test from "./components/Test";

function App() {
  return (
    <div>
      <Routes>
        <Route
          path="test"
          element={
            <div>
              <Test />
              <Test />
            </div>
          }
        ></Route>
        <Route path="post">
          <Route path=":post" element={<Post />}></Route>
          <Route path="me" element={<div>2342</div>}></Route>
        </Route>
        <Route path="about" element={<div>asdfasdfa</div>}></Route>
      </Routes>
    </div>
  );
}

export default App;

// index.tsx

import React from "react";
import ReactDOM from "react-dom/client";
import "./index.css";
import App from "./App";
import reportWebVitals from "./reportWebVitals";
import { BrowserRouter } from "react-router-dom";

const root = ReactDOM.createRoot(document.getElementById("root") as HTMLElement);
root.render(
  <React.StrictMode>
    <BrowserRouter>
      <App />
    </BrowserRouter>
  </React.StrictMode>
);

// If you want to start measuring performance in your app, pass a function
// to log results (for example: reportWebVitals(console.log))
// or send to an analytics endpoint. Learn more: https://bit.ly/CRA-vitals
reportWebVitals();