const handleClick = event => console.log(event.target.dataset) // {mssg: "Hello!"} const FooBar = () => <button data-mssg="Hello!" onClick={handleClick}>Speak</button>;
const handleClick = event => console.log(event.target.dataset) // {mssg: "Hello!"} const FooBar = () => <button data-mssg="Hello!" onClick={handleClick}>Speak</button>;