1 import React, { Component } from 'react';

     2 import { Label } from 'react-bootstrap';

     3 import moment from 'moment';

     4 

     5 class Clock extends Component {

     6 

     7   state = {

     8     time: moment().format('H:mm:ss'),

     9   }

    10 

    11   componentDidMount() {

    12     setInterval(() => {

    13       const time = moment().format('H:mm:ss');

    14       this.setState({ time });

    15     }, 1000);

    16   }

    17 

    18   render() {

    19     return (

    20       <Label bsStyle="info">{ this.state.time }</Label>

    21     );

    22   }

    23 }

    24 

    25 export default Clock