/Javascript/React/Onclick start and stop the count react

Onclick start and stop the count react

class Controls extends React.Component{
    state={
        myInterval : null,
        time: 25*60*1000
    }
    countDown = () => {
        this.setState({
            time : this.state.time-1000,
        })
    }
    startTimer = () => {
        this.setState({myInterval : setInterval(this.countDown,1000)})
    }
    stopTimer = () => {
        clearInterval(this.state.myInterval)
    }
    render(){
        return(
            <div>
                <button onClick={this.startTimer}>Start</button>
                <button onClick={this.stopTimer}>Stop</button>
                {this.state.time}
            </div>
        )
    }
}


class App extends React.Component{
    render(){
        return <Controls/>
    }
}





ReactDOM.render(
  <App />,
  document.getElementById("react")
);

Source: stackoverflow.com

Similar codes

2 votes141 views2 answers
How to export multiple functions react from one file
Javascript React
0 vote165 views1 answer
React router native back button
Javascript React
0 vote91 views1 answer
How to define cardTitle background image in mdl in reactjs
Javascript React
0 vote157 views1 answer
React native check os
Javascript React
0 vote157 views1 answer
Reactjs TypeError: b is undefined
Javascript React
0 vote146 views3 answers
Proptypes for a react component
Javascript React
3 votes133 views1 answer
Render image url in react native
Javascript React
0 vote141 views1 answer
To do list app react code
Javascript React
1 vote163 views1 answer
UseScreens() react native
Javascript React
0 vote131 views1 answer
Dull or blur a background image in react native
Javascript React