function App () {

  const handleClick = (parameter) => {

    console.log('Mouse click', parameter)

  }

​

  return (

    <form>

      <button onClick={() => handleClick('button 1')} type="button">

        Click me 1

      </button>

      <button onClick={() => handleClick('button 2')} type="button">

        Click me 2

      </button>

      {/* WRONG - the function executes if you don't provide it as a return value */}

      <button onClick={handleClick('button 3')} type="button">

        Click me 3

      </button>

    </form>

  )

}