реагировать переменную вставьте в строку
import React from 'react';
import ReactDOM from 'react-dom';
const text = 'world';
const App = () => {
return (
<div>
{/*1. Using template literals and ${expression}*/}
{`Hello ${text}`}
{/*2. Concatenating variable and string*/}
{'Hello ' + text}
</div>
);
};
const root = document.querySelector('#root');
ReactDOM.render(<App />, root );
abdelghanyMh