Introduction
Cross-platform mobile applications are in high demand in today’s digital landscape. React Native is among the top frameworks and libraries used by developers to build these apps. if you are a developer looking forward to your first job interview, you have come to the right place! The basic interview questions covered in this blog give a clear picture of the basics of React Native. Whether you are learning React Native or getting ready to crack your first job interview, our simple explanations will help you grasp the basics of React Native easily. Read on to learn more!
Top React Native Basic Interview Questions and Answers
1. What is React Native and how is it different from React?
React Native is a framework used by developers to build native mobile applications. React is a JavaScript library used to build responsive user interfaces for web applications.
In terms of syntax, both React and React Native use JSX (JavaScript XML), but React uses HTML tags like <div>, <h1>, and <p>, while React Native uses <view> and <text>.
2. How to install React Native?
There are two ways to set up a React Native development environment.
Using Expo (Recommended for Beginners):
There are two prerequisites for this:
Node.js: Ensure you have a recent version of Node.js installed.
Phone or Emulator: You’ll need a phone or emulator to run your app.
- Create a new React Native project
npx create-expo-app AwesomeProject
cd AwesomeProject
npx expo start 2. Install the Expo Go app on your iOS or Android phone and connect it to the same wireless network as your computer.
3. On Android, use the Expo Go app to scan the QR code from your terminal to open your project. On iOS, use the built-in QR code scanner in the default iOS Camera app.
4. Modify your app by editing App.js. The application will automatically reload when you save changes.
Using React Native CLI (For Experienced Developers)
For this you need Xcode (for iOS) or Android Studio (for Android)
1. Create a new React Native project
npx react-native init AwesomeProject
cd AwesomeProject
npx react-native start 2. Install the Expo Go app on your phone (iOS or Android) and connect it to the same network as your computer.
3. To run on an Android Virtual Device, use: npm run android
4. To run on the iOS Simulator (macOS only), use: npm run ios
3. Explain the architecture of a React Native app.
React Native apps have a component-based architecture. A component-based has reusable UI components and data management that use state and props. Moreover, it uses libraries like React Navigation for navigation and Redux for global state management.
4. What is Flexbox and what are some of its most used properties?
Flexbox is a layout model that allows elements to align and distribute space within a container. Below are the properties of Flexbox.
flexDirection: It is used to specify whether elements will be aligned vertically or horizontally. It uses the values column and row.
justifyContent: it is used to determine how elements should be distributed inside the container. The values used are center, flex-start, flex-end, space-around, and space-between.
alignItems: It is used to determine how elements should be distributed inside the container along the secondary axis. The values used are center, flex-start, flex-end, and stretched.
5. What is JSX in React Native?
JavaScript XML (JSX) is a syntax extension in React Native. It allows embedding HTML-like elements within JavaScript code. JSX allows developers to write components using a familiar HTML structure, which simplifies UI rendering. By getting transpiled into JavaScript, JSX enables React Native components to be expressed in a readable and intuitive format.
6. How to create a component in React Native?
You can create a component in React Native by defining a JavaScript function or class that returns JSX elements. Here is an example:
import React from 'react'; import { View, Text } from 'react-native'; const MyComponent = 0) => {
return ( <View> <Text>Hello, React Native!</Text> <View>): }; export default MyComponent; 7. What are React Native vector
React Native Basic Interview Questions
Get ready for your interview with our React Native basic questions and answers. Ace your interview with our expertly curated list.
PublishedApril 18, 2024
CategoryOOPs interview qna
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