2.1 Render & JSX

..
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render() {
  const txt = 'Hello';
  function say(name){
    return 'I am '+name;
  }
  return (
    <View>
      <Text>This is a title!</Text>
      <Text>{txt}</Text>
      <View>
        <Text>{say('React')}</Text>
      </View>
    </View>
  );
}
..
...