ajcrites · January 8, 2019 03:11
diff --git a/A-before-createRef.ts b/A-before-createRef.ts
 export class About extends React.Component {
  ...
  contentRef = React.createRef();

  render() {
    return <AboutContent ref={this.contentRef} />;
  }
 }
diff --git a/B-after-useRef.ts b/B-after-useRef.ts
 export const About = () => {
  const contentRef = useRef(null);
  ...
  return <AboutContent ref={contentRef} />
 };
	export class About extends React.Component {
	...
	contentRef = React.createRef();

	render() {
	return <AboutContent ref={this.contentRef} />;
	}
	}
	export const About = () => {
	const contentRef = useRef(null);
	...
	return <AboutContent ref={contentRef} />
	};