Javascript Node Js Interview Questions
Comprehensive JavaScript and Node.js Interview Questions Guide
Javascript Node Js Interview Questions
JavaScript Node.js interview questions often focus on concepts such as asynchronicity, event loop, callbacks, modules, and file system handling. These questions aim to assess a candidate's understanding of how Node.js leverages JavaScript's event-driven, non-blocking architecture to handle concurrent requests efficiently. They also test the candidate's ability to work with various Node.js modules and perform common tasks, such as file reading and writing, network requests, and error handling.
To Download Our Brochure: https://www.justacademy.co/download-brochure-for-free
Message us for more information: +91 9987184296
1 - What is the difference between ‘==’ and ‘===’?
2) Explain event loop and asynchronous programming in Node.js.
3) What is the purpose of ‘const’ and ‘let’ keywords in Node.js?
4) What are the main types of data structures used in Node.js?
5) How does Node.js handle file system operations?
6) What is the ‘require’ function used for in Node.js?
7) What is the difference between a callback and a promise?
8) What is Node.js used for and what are its advantages?
9) What are the different types of HTTP request methods used in Node.js?
10) How is error handling done in Node.js?
11 - What is the ‘Buffer’ class and how is it used?
12) What are some popular Node.js frameworks?
13) How can you improve performance in Node.js applications?
14) What is the ‘EventEmitter’ class in Node.js?
15) How is data validation achieved in Node.js?
Ways to Get More Points:
Input Quality:
- Provide valuable, original content that is relevant to the topic.
- * Ensure your input is well written, grammatically correct, and free of factual errors.
- * Use clear and concise language, avoiding jargon or overly technical terms.
- * Properly attribute sources and cite factual information.
- Community Engagement:
- * Actively participate in discussions by asking thoughtful questions, providing insightful comments, and engaging with other users.
- * Respect the opinions and perspectives of others.
- * Be polite and professional in your interactions.
- * Help other users by answering their questions or providing helpful resources.
- Contribution Frequency:
- * Regularly contribute to the community by providing input or engaging in discussions.
- * The more you contribute, the more points you will accumulate.
- * However, avoid posting irrelevant or low quality content just to earn points.
- Specific Actions:
- Answer Questions:* Provide helpful and informative answers to questions asked by other users.
- Create Posts:* Start new discussions or share valuable information by creating new posts.
- Edit Content:* Improve the quality of existing content by making edits that provide additional insights or correct errors.
- Moderation:* If you have been granted moderation privileges, participate actively in moderating the community by removing spam, promoting quality content, and ensuring a positive and respectful environment.
- Special Events and Contests:* Participate in community events or contests that offer additional points as rewards.
- Other Tips:
- Join Relevant Communities:* Focus on participating in communities that are related to your areas of expertise or interest.
- Follow Guidelines:* Familiarize yourself with the community guidelines and ensure your contributions adhere to them.
- Be Patient:* Accumulating points takes time and consistent effort. Don't expect to gain a large number of points overnight.
- Enjoy the Process:* Remember that the primary goal of participating in online communities is to share knowledge, connect with others, and learn. Treat the point system as a secondary motivator rather than an obsession.
- Join contests and giveaways: Participate in online contests and giveaways to earn points quickly.
- 2. Complete surveys: Take online surveys to share your opinions and earn points.
- 3. Watch videos: Watch videos on certain websites or platforms to accumulate points.
- 4. Shop through rewards portals: Use rewards portals to earn points when you shop online at participating retailers.
- 5. Use credit cards: Use credit cards that offer rewards programs to earn points on purchases.
- 6. Refer friends: Refer friends to sign up for certain services or products to earn referral points.
- 7. Use loyalty programs: Join loyalty programs offered by businesses to earn points for repeat purchases.
- 8. Use cashback apps: Use cashback apps to earn points when you shop in store or online.
- 9. Play games: Play online games or participate in game apps that offer points as rewards.
- 10. Use coupon codes: Use coupon codes when making purchases online to earn discounts and points simultaneously.
- 11. Use search engines: Use search engines that offer points for searches.
- 12. Download apps: Download apps that offer points for app installations or other actions.
- 13. Sign up for email lists: Sign up for email lists of businesses to receive exclusive offers and earn points.
- 14. Be active on social media: Participate in social media campaigns or follow certain brands to earn points.
- 15. Read articles: Read articles on websites or apps that offer points for reading.
- Course Overview
- Master the art of acing JavaScript and Node.js interviews with this comprehensive course. Covering core concepts, data structures, algorithms, and Node.js best practices, this course equips you with the knowledge and skills to stand out in technical interviews and land your dream job.
- Course Description
- Master the art of acing JavaScript Node.js job interviews with this comprehensive course. Explore fundamental concepts, frameworks, best practices, and commonly asked technical and behavioral questions. Build your confidence and prepare effectively for your upcoming 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 - Interactive Code Editor: Allows students to practice coding in real time, receive feedback, and debug their code.
2) Practice Questions Database: Provides a comprehensive collection of interview questions and answer templates to enhance knowledge and preparation.
3) Mock Interview Platform: Simulates real world interview scenarios, allowing students to practice their communication and technical skills with expert interviewers.
4) Code Review and Feedback: Experts provide detailed code reviews and constructive feedback on student submissions, helping them identify areas for improvement.
5) Personalized Learning Paths: Tailored to individual student needs and skill levels, these paths offer a structured and efficient approach to preparation.
6) Access to Expert Instructors: Students can interact with experienced JavaScript and Node.js professionals for guidance, mentorship, and support throughout the program.
Strategies to Get More Points:
1. Play Regularly:
- Consistency is key. Play TriviaCrack frequently to accumulate points.
- 2. Win Challenges:
- * Compete in daily challenges and weekly tournaments to earn bonus points.
- 3. Answer Quickly and Correctly:
- * Time is of the essence. Answer questions swiftly and accurately to maximize points.
- 4. Upgrade Your Crown:
- * Collect crowns to upgrade your crown level. Higher levels grant more points per win.
- 5. Use Power Ups Strategically:
- * Use power ups like “Double Points” and “Freeze Opponent” wisely to increase your chances of winning and earning points.
- 6. Collect Flags:
- * Answering questions correctly for a specific country earns you flags. Collect flags to boost your point total.
- 7. Join a Good Team:
- * Team up with friends or other skilled players to share knowledge and increase points.
- 8. Participate in Events:
- * Take part in special events and promotions to earn exclusive rewards and points.
- 9. Refer Friends:
- * Invite friends to join TriviaCrack and earn referral bonuses.
- 10. Take Breaks:
- * While consistency is important, taking occasional breaks can help improve focus and performance.
- Additional Tips:
- Study the Categories:* Familiarize yourself with the different categories to enhance your knowledge.
- Use External Resources:* Consult online resources or books to supplement your knowledge.
- Practice Makes Perfect:* Play practice games to improve your speed and accuracy.
- Stay Updated:* Keep up with current events and trivia to expand your knowledge base.
- Have Fun:* TriviaCrack is a game. Enjoy the process and don't get discouraged by occasional losses.
Browse our course links : https://www.justacademy.co/all-courses
To Join our FREE DEMO Session:
This information is sourced from JustAcademy
Contact Info:
Roshan Chaturvedi
Message us on Whatsapp: +91 9987184296
Email id: info@justacademy.co
