JAVASCRIPT

event handling in react documentation

function Form() {
  function handleSubmit(e) {
    e.preventDefault();
    console.log('You clicked submit.');
  }

  return (
    <form onSubmit={handleSubmit}>
      <button type="submit">Submit</button>
    </form>
  );
}

react handling event

handleClick = event => event.target.classList.add('click-state');

render() {
  return <div className="base-state" onClick={this.handleClick}>Click here</div>;
}