React docs cheat sheat

Events.md

Handling Events

• React events are named using camelCase, rather than lowercase.
• With JSX you pass a function as the event handler, rather than a string.

<button onClick={activateLasers}>
  Activate Lasers
</button>

You cannot return false to prevent default behavior in React. You must call preventDefault explicitly.

function ActionLink() {
  function handleClick(e) {
    e.preventDefault();
    console.log('The link was clicked.');
  }

  return (
    <a href="#" onClick={handleClick}>
      Click me
    </a>
  );
}

State.md

State and Lifecycle