good react tutorials code example
Example 1: react tutorial
class Board extends React.Component {
constructor(props) { super(props); this.state = { squares: Array(9).fill(null), }; }
renderSquare(i) {
return <Square value={i} />;
}
Example 2: react tutorial
As far as I can tell from looking, codecademy, w3schools,
and many answers on stack overflow are all outdated.
The best option is "https://reactjs.org/"