五、使用CRA创建项目
小于 1 分钟约 142 字
（一）使用 create-react-app
1. src/index.js
import React from "react";
import ReactDOM from "react-dom/client";
import App from "./App";
const root = ReactDOM.createRoot(document.getElementById("root"));
root.render(
<React.StrictMode>
<App />
</React.StrictMode>,
);
2. src/App.js
import React from "react";
export default function App() {
return <div>App</div>;
}
3. public/index.html
<!DOCTYPE html>
<html lang="zh">
<head>
<meta charset="utf-8" />
<link rel="icon" href="%PUBLIC_URL%/favicon.ico" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
<meta name="theme-color" content="#000000" />
<meta name="description" content="学习React 18啦" />
<title>React App</title>
</head>
<body>
<noscript>You need to enable JavaScript to run this app.</noscript>
<div id="root"></div>
</body>
</html>