String.fromCodePoint从数字代码点获取字符，并
parseInt从十六进制字符串获取数字。
您的转换将如下所示：
String.fromCodePoint(parseInt(MyVariable, 16))
工作示例：
const App = ({ unipre }) => <p> 3, 2, 1, GO ! {String.fromCodePoint(parseInt(unipre, 16))}</p>ReactDOM.render(<App unipre='1F680'/>, document.getElementById('root'))<script src="https://cdnjs.cloudflare.com/ajax/libs/react/16.5.2/umd/react.production.min.js"></script><script src="https://cdnjs.cloudflare.com/ajax/libs/react-dom/16.5.2/umd/react-dom.production.min.js"></script><div id='root'>
