/Javascript/React/React allow only numbers in input

React allow only numbers in input

class App extends React.Component{
   constructor(){
      super();
      this.state = {value: ''};
      this.onChange = this.onChange.bind(this)
   }
   
   onChange(e){
      const re = /^[0-9\b]+$/;
      if (e.target.value === '' || re.test(e.target.value)) {
         this.setState({value: e.target.value})
      }
   }
   
   render(){
     return <input value={this.state.value} onChange={this.onChange}/>
   }
}

ReactDOM.render(<App/>,document.getElementById('app'))

Source: stackoverflow.com

Similar codes

0 vote114 views1 answer
React Cache buster
Javascript React
0 vote100 views1 answer
Mreact graph
Javascript React
1 vote132 views1 answer
How to add react icons using yarn
Javascript React
7 votes111 views4 answers
React history push search params
Javascript React
0 vote131 views1 answer
React native firebase login with facebook
Javascript React
0 vote108 views5 answers
How to use paystack with react
Javascript React
2 votes107 views2 answers
Fullcalendar react add event duration
Javascript React
1 vote118 views1 answer
React spread operator
Javascript React
1 vote118 views1 answer
React native flatlist hide scrollbar
Javascript React
1 vote107 views1 answer
React native detect swipe
Javascript React