const data = ["James", "John", "Jessica", "Jamie"];

function App() {
  const [visibilities, setVisibilities] = React.useState(() => data.map((x) => true));

  const handleClick = (event) => {
    const index = parseInt(event.currentTarget.dataset.index, 10);
    const newVisibilities = [...visibilities];
    newVisibilities[index] = !newVisibilities[index];
    setVisibilities(newVisibilities);
  };

  return (
    

      {data.map((value, index) => (
        

          Hello {value}, you are {visibilities[index] ? "visible" : "hidden"}!
        
      ))}
    
  );
}

ReactDOM.render(, document.querySelector("main"));