The way that we can make comments in React is a little weird, and when we search information is difficult to find it. It is not possible to use HTML comments inside of JSX

render() {
  return (
    <div>
      <!-- this does not work -->
    </div>
  )
}

It is necessary to use comments in Javascript but for that we will need to use the curly brackets in the following way:

{/* A JSX comment */}

And multiline

{/* 
    A multiline JSX
    JSX
    comment
*/}