A Complete Guide to React: Basics, Interview Questions, and More
Introduction to React
React is a popular JavaScript library used for building dynamic user interfaces, especially for single-page applications. Developed and maintained by Facebook, React focuses on creating reusable UI components and managing state efficiently.
If you’re preparing for a React interview or looking to enhance your React knowledge, this post is your go-to resource. Below, we explore key concepts, commonly asked interview questions, and provide a downloadable PDF with 100 essential React interview questions.
What is React?
React is a front-end library that allows developers to create web applications with:
- Component-based architecture: Build UIs using reusable components.
- Declarative syntax: Describe how the UI should look for different application states.
- Efficient DOM updates: Use the Virtual DOM for optimized rendering.
Key Features of React
- Declarative: Write simpler and more predictable code.
- Component-based: Break UIs into small, reusable pieces.
- Virtual DOM: Boost performance by minimizing direct interactions with the real DOM.
- Unidirectional Data Flow: Keep the data flow simple and predictable.
- Extensibility: Work seamlessly with libraries like Redux, React Router, etc.
Why Choose React for Your Projects?
- Performance: Fast updates through the Virtual DOM.
- Flexibility: Integrates easily with other tools and frameworks.
- Community Support: Large community and extensive resources.
- Reusability: Reuse components across different projects.
- Rich Ecosystem: Extensive libraries and tools, such as Redux, React Router, and Material-UI.
