React Native Interview Questions

• Facebook
• Facebook Ads Manager
• Instagram
• F8
• Airbnb
• Skype
• Tesla

You know more from https://facebook.github.io/react-native/showcase.html

Also, Read Best React.Js Interview Questions and Answers

• Step 1: npm install -g create-react-native-app // Installs create native app
• Step 2: create-react-native-app AwesomeProject // Create a project named AwesomeProject
• Step 3: cd AwesomeProject
• Step 4: npm start

Use the following commands to install and create a React Native App

To Install

npm install -g create-react-native-app

To Create Project

create-react-native-app MyReactNative

Flexbox in React Native works in the same way as it does in CSS on the web, with a few exceptions. It is used to provide a consistent layout on different screen sizes.

With react native we can create following types of app:

• Working prototypes Apps
• Apps with streamlined UI
• Cross-platform apps
• An app without the use of native APIs

FlatList in React Native is a component that displays the content in similarly structured data as a scrollable list. It is used for large lists of data where the number of list items changes over time.

this.props.navigation.navigate() method is used to pass value between screen in React Native.

Syntax:

this.props.navigation.navigate('RouteName', { /* params go here */ })

JavaScriptCore is an open-source Web browser engine which run in WebKit. It helps developers to create own browser.

The gesture responder system manages the lifecycle of gestures in your app. A touch can go through several phases as the app determines what the user's intention is. For example, the app needs to determine if the touch is scrolling, sliding on a widget, or tapping. This can even change during the duration of a touch. There can also be multiple simultaneous touches.

The touch responder system is needed to allow components to negotiate these touch interactions without any additional knowledge about their parent or child components.

Source: https://facebook.github.io/react-native/docs/gesture-responder-system

React Native Platform module is used to detect the platform of device in which the application is running. You can use the below code detect platform in React Native.

import {Platform, StyleSheet} from 'react-native';
const styles = StyleSheet.create({
  height: Platform.OS === 'ios' ? 200 : 100,
});

React Native implements the browser timers functions. Below are few Timers function that can be used

• setTimeout, clearTimeout
• setInterval, clearInterval
• setImmediate, clearImmediate
• requestAnimationFrame, cancelAnimationFrame