React Js 16 Interview Questions
Essential ReactJS Interview Questions for Developers (16 Questions Included)
React Js 16 Interview Questions
React 16 introduced significant performance enhancements, API changes, and architectural improvements making it a faster, more reliable, and extensible framework. Features like the new Fiber architecture, Error Boundaries, and a more efficient Context API address performance bottlenecks, improve error handling, and enhance code reusability. React 16 also introduced new lifecycle methods and a focus on declarative UI programming, promoting cleaner and more concise code.
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1 - What's the difference between `state` and `props`?
2) Explain the concept of unidirectional data flow in React.
3) What are the lifecycle methods in React?
4) What is the purpose of using `render()` method?
5) What is JSX and how is it different from regular JavaScript?
6) Explain the concept of “keys” in React.
7) What is the purpose of using React hooks?
8) How do you handle asynchronous operations in React?
9) What are the different ways to create a React component?
10) Explain the Virtual DOM and how it works.
11 - What is the difference between React Native and React?
12) Describe how React Fiber architecture improved React.
13) What are the performance optimizations you can apply to React apps?
14) How do you ensure accessibility in React applications?
15) Explain the role of context in React and how it is used.
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Benefits of taking our course
Functional Tools
1 - Node.js: A runtime environment for JavaScript that allows developers to build server side and desktop applications.
2) React.js: A JavaScript library for building user interfaces. It employs a component based architecture, allowing developers to create reusable and maintainable interfaces.
3) Redux: A state management library for React applications. It provides a centralized store for managing application state, enabling data flow predictability and better performance.
4) Jest: A testing framework for JavaScript applications, including React components. It allows developers to write unit tests and integration tests to ensure code quality and correctness.
5) Webpack: A module bundler for JavaScript applications. It bundles multiple JavaScript files into a single file, making it easier to manage and load modules in the application.
6) Babel: A JavaScript transpiler that converts modern JavaScript syntax to a version compatible with older browsers. It enables developers to use cutting edge JavaScript features while maintaining backward compatibility.
Training Program for Students:
Introduction to React.js: Overview of React's concepts, component based architecture, and state management.
Building React Applications: Hands on experience with creating React components, managing state, and handling user interactions.
Integrating React with Redux: Understanding the principles of Redux and how to integrate it with React applications for improved state management.
Testing with Jest: Introduction to unit testing and integration testing in React applications using Jest.
Deployment with Webpack and Babel: Setting up Webpack and Babel for module bundling and transpiling, ensuring efficient and backward compatible deployment of React applications.
Project Based Learning: Students will collaborate on a project to build a React application, applying their knowledge of React.js, Redux, and testing.
Mentorship and Support: Ongoing mentorship and support from experienced React developers to guide students through the learning process and provide feedback on their projects.
Content Quality:
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