[React] React.PureComponent

React.PureComponent is similar to React.Component. The difference between them is that React.Component doesn’t implement shouldComponentUpdate(), but React.PureComponent implements it with a shallow prop and state comparison.

If your React component’s render() function renders the same result given the same props and state, you can use React.PureComponent for a performance boost in some cases.

// Component
class PureCompnent extends React.Component {
  render() {
    return (
      <div>
        <h1>{this.props.title}</h1>
      </div>
    );
  }
}

// use
<PureComponent title={'Awesome React'} />