react modify component method code example
Example: lifecycles if reactjs
class Clock extends React.Component {
constructor(props) {
super(props);
this.state = {date: new Date()};
}
componentDidMount() { }
componentWillUnmount() { }
render() {
return (
Hello, world!
It is {this.state.date.toLocaleTimeString()}.
);
}
}