Top React Native Interview Questions in 2025
React Native, developed by Facebook, is a powerful open source JavaScript framework designed for building native mobile applications efficiently using a single codebase that works on both Android and iOS. As React Native continues to dominate the mobile development landscape, preparing for interviews in 2025 requires a sharp understanding of its core concepts and advantages.
1 ) What is React Native?
React Native is an open source framework by Facebook that enables developers to build native mobile applications using JavaScript and React. It leverages native components to provide a smooth, native like user experience across platforms.
2 ) How Does React Native Differ from React?
React is a library focusing on building user interfaces primarily for web applications utilizing a virtual DOM for rendering, while React Native is a full framework that compiles JavaScript code into native code for mobile platforms, allowing true native performance and behavior.
3 ) What Are the Benefits of Using React Native for Mobile App Development?
Cross platform compatibility: Write once, run on both Android and iOS.
Native performance: Access native components for optimized speed and responsiveness.
Reusable components: Boost development efficiency with modular, reusable UI elements.
Hot reloading: Accelerate development cycles by instantly reflecting changes without recompiling apps.
Large community and ecosystem: Access extensive libraries, tools, and support.
Cost effectiveness: Lower development and maintenance costs due to shared codebase.
4 ) How is Cross Platform Functionality Achieved in React Native?
React Native uses a single JavaScript codebase that is interpreted and compiled into native code for each platform. This abstraction allows developers to maintain one set of code that renders native UI components on both Android and iOS, ensuring broad compatibility and native aesthetics.
This concise overview of key questions and concepts is essential for anyone preparing for React Native interviews in 2025, ensuring a strong foundation in understanding the framework's architecture, benefits, and practical applications.
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