Class component react

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

Class component react

class ComponentName extends React.Component {
  render() {
    return ;
  }
}

export default ComponentName;

Class Component in ReactJS

class HelloMessage extends React.Component {
  render() {
    return (
      <div>
        Hello {this.props.name}
      </div>
    );
  }
}

ReactDOM.render(
  <HelloMessage name="Taylor" />,
  document.getElementById('hello-example')
);

Source: reactjs.org

React js class component

// New component class starts here:
class Friend extends React.Component {
  render() {
    const friend = friends[0];
    return (
      <div>
        <h1>{friend.title}</h1>
        <img src={friend.src}/>
      </div>
    );
  }
}

Similar codes

1 vote159 views1 answer
React native slow performance after load iamges
Javascript React
1 vote152 views1 answer
React js component parameters
Javascript React
3 votes161 views2 answers
React chart.js
Javascript React
0 vote185 views1 answer
Attempted import error: 'useDispatch' is not exported from 'react-redux'
Javascript React
0 vote151 views1 answer
How to change style class by using onclick function with multiple buttons in react js
Javascript React
1 vote153 views2 answers
Upload image react
Javascript React
5 votes182 views2 answers
Remove underline from link i react
Javascript React
0 vote140 views1 answer
React make component full screen
Javascript React
0 vote149 views1 answer
Reactjs class exemple componentDidMount
Javascript React
0 vote156 views2 answers
React show view based on role permission
Javascript React