React Native Interview Questions

  1. Explain React Native?
  2. Can we combine native ios or android code in React Native.
  3. Who uses React Native?
  4. List Step to Create and start a React Native App?
  5. What does StyleSheet.create do?
  6. For what XHR Module is used in React Native?
  7. List some core components of React Native?
  8. How Virtual DOM works in React Native?
React Native Interview questions

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React Native is mobile app development platform that allow you to create android and ios apps only using Javascript. React Native uses the same fundamental UI building blocks as regular iOS and Android apps so applications created using React Native are indistinguishable from an app built using Objective-C or Java.
Yes, we can. React Native smoothly combines the components written in Objective-C, Java, or Swift.
Thousands of apps are created using React Native. Here is the list of some popular companies who are using React Native.
  • Facebook
  • Facebook Ads Manager
  • Instagram
  • F8
  • Airbnb
  • Skype
  • Tesla

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Run the following command to Create and start a React Native App.
  • 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
StyleSheet.create method ensures that values are immutable and opaque, they are also only created once.
XHR Module is used for implementation of XMLHttpRequest to post data on the server.
Text, Image, View, TextInput, ListView are some core components of React Native.
React creates an in-memory data structure cache, computes the resulting differences, and then updates the browser’s displayed DOM efficiently. This allows developers to write code as if the entire page is rendered on each change while the React libraries only render subcomponents that actually change.