React Native class component

class component: class component access react lifecycle methods and render and state props functionality.

app name : test

component name: App.js

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/**

* Sample React Native App

* https://github.com/facebook/react-native

*

* @format

* @flow strict-local

*/

import React, { Component } from 'react'

import { View, Text, Button, } from 'react-native';

class App extends Component {

render()

{

function hello(){

alert("Welcome class component ReactNative King")

}

return(

<View>

<Text>Class Component </Text>

<Button title="Click Me " onPress={hello}/>

</View>

)

}

}

export default App;