Lifecycles if reactjs

class Clock extends React.Component {
  constructor(props) {
    super(props);
    this.state = {date: new Date()};
  }

  componentDidMount() {  }
  componentWillUnmount() {  }
  render() {
    return (
      <div>
        <h1>Hello, world!</h1>
        <h2>It is {this.state.date.toLocaleTimeString()}.</h2>
      </div>
    );
  }
}

Source: reactjs.org

Similar codes

1 vote140 views3 answers
React toggle state
Javascript React
2 votes118 views1 answer
React native open email client expo
Javascript React
2 votes139 views3 answers
How to get current date in react js
Javascript React
0 vote121 views1 answer
React native andri]oid ReferenceError: Can't find variable: Intl
Javascript React
1 vote125 views1 answer
React native cover image
Javascript React
0 vote134 views1 answer
Usb react native device not found
Javascript React
0 vote168 views1 answer
Get size of a View in React Native
Javascript React
0 vote151 views1 answer
Switch react router
Javascript React
1 vote123 views1 answer
React native svg onpress
Javascript React
0 vote131 views1 answer
Reference hook in react
Javascript React