Add samples) react components with JSDocs!

Please add samples on JSDocs with react, a lot programmers including me need IntelliSense and other benefits like auto-completion and type-checking as well. Migration over to TypeScript is not ideal if you have large code base. Adding a JSDoc comment is the easiest way of getting a lot of TypeScript tooling without configuring any code at all. On top of that vscode already supports it just by turning on in the settings
"javascript.implicitProjectConfig.checkJs": true

It even provides comment template for JavaScript functions when you type/**

That's way I think reactjs docs should provide examples on this

未指定檔案或測試；先檢視現有的 React 文件範例，以及請求中的 JSDoc 和 VS Code 脈絡。定義哪些範例應示範 JSDoc，然後確認文件包含可使用的範例，說明 IntelliSense、補全和型別檢查的預期效益。