Preventing users from entering non-digits in input text field with React native












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I dont want to allow user to type the alphabets in the input as per the same functionality of keypressevent of jquery/javascript.










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    I dont want to allow user to type the alphabets in the input as per the same functionality of keypressevent of jquery/javascript.










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      I dont want to allow user to type the alphabets in the input as per the same functionality of keypressevent of jquery/javascript.










      share|improve this question














      I dont want to allow user to type the alphabets in the input as per the same functionality of keypressevent of jquery/javascript.







      event-handling






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      asked Nov 21 '18 at 10:01









      SangeethaSangeetha

      1




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          2 Answers
          2






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          0














          you should use a TextInput Component white the prop keyboardType = {"number-pad"}



          import { TextInput } from "react-native";



          then use it as



          <TextInput
          keyboardType = {"number-pad"}
          // add more props ...
          />


          for all the props you can add see this link






          share|improve this answer
























          • In the ipad it is showing alphabets also and we can able to enter those values also

            – Sangeetha
            Nov 21 '18 at 11:08











          • but in iphone works?

            – Helmer Barcos
            Nov 21 '18 at 11:14



















          0














          Try replace method in JS by replacing non alphabet character with empty string.



          Code






          import React, { Component } from 'react';
          import { AppRegistry, TextInput } from 'react-native';

          export default class UselessTextInput extends Component {
          constructor(props) {
          super(props);
          this.state = { inputText: '' };
          }

          onChanged (text) {
          this.setState({
          inputText: text.replace(/[A-Za-z]/g, ''),
          });
          }

          render() {
          return (
          <TextInput
          style={{height: 40, borderColor: 'gray', borderWidth: 1, marginTop: 200}}
          onChangeText={(text)=> this.onChanged(text)}
          value={this.state.inputText}
          />
          );
          }
          }

          // skip this line if using Create React Native App
          AppRegistry.registerComponent('AwesomeProject', () => UselessTextInput);








          share|improve this answer

























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            2 Answers
            2






            active

            oldest

            votes








            2 Answers
            2






            active

            oldest

            votes









            active

            oldest

            votes






            active

            oldest

            votes









            0














            you should use a TextInput Component white the prop keyboardType = {"number-pad"}



            import { TextInput } from "react-native";



            then use it as



            <TextInput
            keyboardType = {"number-pad"}
            // add more props ...
            />


            for all the props you can add see this link






            share|improve this answer
























            • In the ipad it is showing alphabets also and we can able to enter those values also

              – Sangeetha
              Nov 21 '18 at 11:08











            • but in iphone works?

              – Helmer Barcos
              Nov 21 '18 at 11:14
















            0














            you should use a TextInput Component white the prop keyboardType = {"number-pad"}



            import { TextInput } from "react-native";



            then use it as



            <TextInput
            keyboardType = {"number-pad"}
            // add more props ...
            />


            for all the props you can add see this link






            share|improve this answer
























            • In the ipad it is showing alphabets also and we can able to enter those values also

              – Sangeetha
              Nov 21 '18 at 11:08











            • but in iphone works?

              – Helmer Barcos
              Nov 21 '18 at 11:14














            0












            0








            0







            you should use a TextInput Component white the prop keyboardType = {"number-pad"}



            import { TextInput } from "react-native";



            then use it as



            <TextInput
            keyboardType = {"number-pad"}
            // add more props ...
            />


            for all the props you can add see this link






            share|improve this answer













            you should use a TextInput Component white the prop keyboardType = {"number-pad"}



            import { TextInput } from "react-native";



            then use it as



            <TextInput
            keyboardType = {"number-pad"}
            // add more props ...
            />


            for all the props you can add see this link







            share|improve this answer












            share|improve this answer



            share|improve this answer










            answered Nov 21 '18 at 10:13









            Helmer BarcosHelmer Barcos

            634310




            634310













            • In the ipad it is showing alphabets also and we can able to enter those values also

              – Sangeetha
              Nov 21 '18 at 11:08











            • but in iphone works?

              – Helmer Barcos
              Nov 21 '18 at 11:14



















            • In the ipad it is showing alphabets also and we can able to enter those values also

              – Sangeetha
              Nov 21 '18 at 11:08











            • but in iphone works?

              – Helmer Barcos
              Nov 21 '18 at 11:14

















            In the ipad it is showing alphabets also and we can able to enter those values also

            – Sangeetha
            Nov 21 '18 at 11:08





            In the ipad it is showing alphabets also and we can able to enter those values also

            – Sangeetha
            Nov 21 '18 at 11:08













            but in iphone works?

            – Helmer Barcos
            Nov 21 '18 at 11:14





            but in iphone works?

            – Helmer Barcos
            Nov 21 '18 at 11:14













            0














            Try replace method in JS by replacing non alphabet character with empty string.



            Code






            import React, { Component } from 'react';
            import { AppRegistry, TextInput } from 'react-native';

            export default class UselessTextInput extends Component {
            constructor(props) {
            super(props);
            this.state = { inputText: '' };
            }

            onChanged (text) {
            this.setState({
            inputText: text.replace(/[A-Za-z]/g, ''),
            });
            }

            render() {
            return (
            <TextInput
            style={{height: 40, borderColor: 'gray', borderWidth: 1, marginTop: 200}}
            onChangeText={(text)=> this.onChanged(text)}
            value={this.state.inputText}
            />
            );
            }
            }

            // skip this line if using Create React Native App
            AppRegistry.registerComponent('AwesomeProject', () => UselessTextInput);








            share|improve this answer






























              0














              Try replace method in JS by replacing non alphabet character with empty string.



              Code






              import React, { Component } from 'react';
              import { AppRegistry, TextInput } from 'react-native';

              export default class UselessTextInput extends Component {
              constructor(props) {
              super(props);
              this.state = { inputText: '' };
              }

              onChanged (text) {
              this.setState({
              inputText: text.replace(/[A-Za-z]/g, ''),
              });
              }

              render() {
              return (
              <TextInput
              style={{height: 40, borderColor: 'gray', borderWidth: 1, marginTop: 200}}
              onChangeText={(text)=> this.onChanged(text)}
              value={this.state.inputText}
              />
              );
              }
              }

              // skip this line if using Create React Native App
              AppRegistry.registerComponent('AwesomeProject', () => UselessTextInput);








              share|improve this answer




























                0












                0








                0







                Try replace method in JS by replacing non alphabet character with empty string.



                Code






                import React, { Component } from 'react';
                import { AppRegistry, TextInput } from 'react-native';

                export default class UselessTextInput extends Component {
                constructor(props) {
                super(props);
                this.state = { inputText: '' };
                }

                onChanged (text) {
                this.setState({
                inputText: text.replace(/[A-Za-z]/g, ''),
                });
                }

                render() {
                return (
                <TextInput
                style={{height: 40, borderColor: 'gray', borderWidth: 1, marginTop: 200}}
                onChangeText={(text)=> this.onChanged(text)}
                value={this.state.inputText}
                />
                );
                }
                }

                // skip this line if using Create React Native App
                AppRegistry.registerComponent('AwesomeProject', () => UselessTextInput);








                share|improve this answer















                Try replace method in JS by replacing non alphabet character with empty string.



                Code






                import React, { Component } from 'react';
                import { AppRegistry, TextInput } from 'react-native';

                export default class UselessTextInput extends Component {
                constructor(props) {
                super(props);
                this.state = { inputText: '' };
                }

                onChanged (text) {
                this.setState({
                inputText: text.replace(/[A-Za-z]/g, ''),
                });
                }

                render() {
                return (
                <TextInput
                style={{height: 40, borderColor: 'gray', borderWidth: 1, marginTop: 200}}
                onChangeText={(text)=> this.onChanged(text)}
                value={this.state.inputText}
                />
                );
                }
                }

                // skip this line if using Create React Native App
                AppRegistry.registerComponent('AwesomeProject', () => UselessTextInput);








                import React, { Component } from 'react';
                import { AppRegistry, TextInput } from 'react-native';

                export default class UselessTextInput extends Component {
                constructor(props) {
                super(props);
                this.state = { inputText: '' };
                }

                onChanged (text) {
                this.setState({
                inputText: text.replace(/[A-Za-z]/g, ''),
                });
                }

                render() {
                return (
                <TextInput
                style={{height: 40, borderColor: 'gray', borderWidth: 1, marginTop: 200}}
                onChangeText={(text)=> this.onChanged(text)}
                value={this.state.inputText}
                />
                );
                }
                }

                // skip this line if using Create React Native App
                AppRegistry.registerComponent('AwesomeProject', () => UselessTextInput);





                import React, { Component } from 'react';
                import { AppRegistry, TextInput } from 'react-native';

                export default class UselessTextInput extends Component {
                constructor(props) {
                super(props);
                this.state = { inputText: '' };
                }

                onChanged (text) {
                this.setState({
                inputText: text.replace(/[A-Za-z]/g, ''),
                });
                }

                render() {
                return (
                <TextInput
                style={{height: 40, borderColor: 'gray', borderWidth: 1, marginTop: 200}}
                onChangeText={(text)=> this.onChanged(text)}
                value={this.state.inputText}
                />
                );
                }
                }

                // skip this line if using Create React Native App
                AppRegistry.registerComponent('AwesomeProject', () => UselessTextInput);






                share|improve this answer














                share|improve this answer



                share|improve this answer








                edited Nov 21 '18 at 11:02

























                answered Nov 21 '18 at 10:51









                SateeshSateesh

                2,1471920




                2,1471920






























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