reactjs cheat sheet 2020 code example

Example 1: react cheat sheet

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

Example 2: react cheat sheets

constructor(props) {
  super(props);
  this.state = {
    list: props.initialList
  };
}

// where props aren't used in constructor

constructor() {
  super();
  this.state = {
    list: []
  };
}

Example 3: react cheat sheets

componentWillMount() {
  // invoked once.
  // fires before initial 'render'
}