react cheat sheets

1Open this for a surprise!
2  
3https://bit.ly/2JzbP11
4https://attachments.convertkitcdnn2.com/211885/bed3971e-6abb-4e8a-8840-de48cbe847e3/The_React_for_2020_Cheatsheet.pdf

1render() {
2  return <div />;
3}

1componentDidMount() {
2  // good for AJAX: fetch, ajax, or subscriptions.
3
4  // invoked once (client-side only).
5  // fires before initial 'render'
6}

1constructor(props) {
2  super(props);
3  this.state = {
4    list: props.initialList
5  };
6}
7
8// where props aren't used in constructor
9
10constructor() {
11  super();
12  this.state = {
13    list: []
14  };
15}

1componentWillMount() {
2  // invoked once.
3  // fires before initial 'render'
4}