How to Render an Array of Objects in React Using the Map Function?

<code class="javascript">class First extends React.Component {
  render() {
    const data = [{ name: "test1" }, { name: "test2" }];
    const listItems = data.map((d) => <li key={d.name}>{d.name}</li>);

    return (
      <div>
        Hello
      </div>
    );
  }
}</code>

<code class="javascript">render() {
    const data =[{"name":"test1"},{"name":"test2"}];
    const listItems = data.map((d) => <li key={d.name}>{d.name}</li>);

    return (
      <div>
      {listItems }
      </div>
    );
  }</code>

<code class="javascript">render() {
    const data =[{"name":"test1"},{"name":"test2"}];
    return (
      <div>
      {data.map(function(d, idx){
         return (<li key={idx}>{d.name}</li>)
       })}
      </div>
    );
  }</code>