[[oktatas:telefon:react_native|< React Native]]

====== Példák TypeScript ======

  * **Szerző:** Sallai András
  * Copyright (c) Sallai András, 2021
  * Licenc: [[https://creativecommons.org/licenses/by-sa/4.0/|CC Attribution-Share Alike 4.0 International]]
  * Web: https://szit.hu

===== Számláló =====

<code javascript App.tsx>
import React, { useState } from 'react';
import { StyleSheet, Text, View, Button } from 'react-native';



export default function App() {
  const [count, setCount] = useState(0);

  function increment() {
    setCount(count+1);
  }

  return (
    <View style={styles.container}>
      <Text>Számláló</Text>
      <Button 
        title='Növel'
        onPress={increment}
      />
      <Text>{ count }</Text>
    </View>
  );
}

const styles = StyleSheet.create({
  container: {
    flex: 1,
    backgroundColor: '#fff',
    alignItems: 'center',
    justifyContent: 'center',
  },
});

</code>