React Js Interview Questions Edureka
React.js Interview Questions Comprehensive Guide (Edureka Edition)
React Js Interview Questions Edureka
React JS Interview Questions edureka provides comprehensive preparation material for job seekers pursuing roles involving React JS. These questions cover fundamental concepts, best practices, debugging techniques, and industry-specific use cases. By studying these questions, candidates can gain valuable insights into React JS principles, enabling them to demonstrate their expertise in job interviews and enhance their chances of success in obtaining their desired position.
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1 - What is the Virtual DOM?
An in memory representation of the real DOM.
2) Define React Hooks.
Functions that let you “hook into” React state and lifecycle features.
3) What is the difference between props and state?
Props are immutable and passed from a parent to a child component, while state is mutable and only managed within a component.
4) Describe the purpose of the React Router.
A library for navigating between pages in React applications.
5) What is the difference between function and class components in React?
Function components are simpler and use Hooks, while class components use lifecycle methods and state.
6) Explain the concept of Data Binding in React.
A one way binding where data flows from the component's state to the UI.
7) What is Redux?
A state management library for React that helps to maintain consistent data across the application.
8) Describe the lifecycle methods of a React component.
Methods that are invoked at specific stages of a component's lifecycle, such as `componentDidMount` and `componentWillUnmount`.
9) What is the purpose of React Context?
A way to pass data between components that are not directly connected.
10) Explain the benefits of using React.
Component based architecture, declarative programming, performance optimizations, and a large community.
11 - Define the React Developer Tools.
A browser extension that provides insights into the React component hierarchy and state.
12) Describe the use of `useMemo` and `useCallback` hooks.
`useMemo` caches a value based on dependencies, while `useCallback` caches a function based on dependencies.
13) Explain the difference between a Controlled and Uncontrolled Component.
Controlled components have their state managed by the React component, while uncontrolled components have their state managed by the DOM.
14) What is the purpose of a React Fragment?
A lightweight wrapper that allows grouping elements without adding extra DOM nodes.
15) Describe the use of React Fast Refresh.
A feature that provides real time updates in the browser during code changes, speeding up development.
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- Course Overview
- This course aims to equip you with the necessary knowledge and skills to confidently ace your ReactJS interviews. Through a comprehensive curriculum covering fundamental and advanced concepts, you will gain an in-depth understanding of ReactJS, its architecture, and best practices. You will explore various interview questions and practice answering them effectively, enhancing your chances of making a strong impression on potential employers.
- Course Description
- Master React JS interview preparation with Edureka's comprehensive course. Dive deep into the core concepts, advanced features, and best practices of React JS. Enhance your understanding of the component lifecycle, state management, and performance optimization. Practice solving real-world interview questions to boost your confidence and prepare effectively for your next React JS interview.
- Key Features
- 1 - Comprehensive Tool Coverage: Provides hands-on training with a range of industry-standard testing tools, including Selenium, JIRA, LoadRunner, and TestRail.
- 2) Practical Exercises: Features real-world exercises and case studies to apply tools in various testing scenarios.
- 3) Interactive Learning: Includes interactive sessions with industry experts for personalized feedback and guidance.
- 4) Detailed Tutorials: Offers extensive tutorials and documentation on tool functionalities and best practices.
- 5) Advanced Techniques: Covers both fundamental and advanced techniques for using testing tools effectively.
- 6) Data Visualization: Integrates tools for visualizing test metrics and results, enhancing data interpretation and decision-making.
- 7) Tool Integration: Teaches how to integrate testing tools into the software development lifecycle for streamlined workflows.
- 8) Project-Based Learning: Focuses on project-based learning to build practical skills and create a portfolio of completed tasks.
- 9) Career Support: Provides resources and support for applying learned skills to real-world job scenarios, including resume building and interview preparation.
- 10) Up-to-Date Content: Ensures that course materials reflect the latest industry standards and tool updates.
Benefits of taking our course
Functional Tools
1 - React Interview Questions Edureka: This course provides a comprehensive guide to preparing for React.js interview questions, covering essential concepts, best practices, and common pitfalls.
2) Interactive Coding Challenges: Students engage in hands on coding challenges that test their understanding of React.js fundamentals and problem solving abilities.
3) Expert Led Video Lessons: Experienced React.js professionals deliver in depth video lessons that delve into advanced topics, industry trends, and interview preparation strategies.
4) Mock Interviews and Feedback: Students participate in mock interviews with industry experts, providing valuable feedback on their performance and areas for improvement.
5) Code Snippets and Projects: The course includes numerous code snippets and real world project examples to further enhance students' understanding of React.js and its practical applications.
6) Dedicated Support: Students have access to a dedicated support team for any technical or conceptual queries they may have during their training program.
- Increase your activity level. This doesn't mean you have to become a gym rat, but even small amounts of physical activity can help you burn extra calories and earn more points. Try adding a walk or bike ride to your daily routine, or taking the stairs instead of the elevator.
- Eat healthier foods.* Making healthy choices can help you reduce your calorie intake and earn more points. Focus on eating fruits, vegetables, whole grains, and lean protein. Limit processed foods, sugary drinks, and unhealthy fats.
- Drink more water.* Water is essential for good health and can help you feel full and reduce your calorie intake. Aim to drink eight glasses of water per day.
- Get enough sleep.* When you're sleep deprived, you're more likely to make poor food choices and overeat. Aim for seven to eight hours of sleep per night.
- Manage stress.* Stress can lead to overeating. Find healthy ways to manage stress, such as exercise, yoga, or meditation.
- Set realistic goals.* Don't try to change too much too soon. Start by making small changes to your diet and activity level. As you progress, you can gradually add more challenges.
- Find a support system.* Having friends or family members who are also trying to lose weight can help you stay motivated. Find a workout buddy, join a support group, or connect with others online.
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