Intellipaat

🌐 Explore JavaScript Interview Questions and Answers to boost your preparation! Check it out here: https://intellipaat.com/blog/interview-question/javascript-interview-questions/

🔥Enroll for Intellipaat's Full Stack Developer Course: https://intellipaat.com/full-stack-web-developer-mean-stack/

#JavaScriptInterviewQuestions2025 #JavaScriptInterviewQuestions #JavaScriptInterviewQuestionsAndAnswers #JavaScriptInterview #JavaScriptInterviewQuestionsForFreshers #JSInterviewQuestions #JSInterviewPreparation #JavaScriptInterviewPreparation #Intellipaat

Are you preparing for a JavaScript interview in 2025? This video covers the Top 30 JavaScript Interview Questions and Answers, designed to help both freshers and experienced developers ace their interviews. Whether you're brushing up on JavaScript fundamentals or tackling advanced topics like closures, promises, or async/await, this comprehensive tutorial has you covered. From essential coding questions to real-world problem-solving scenarios, we’ve included everything you need for successful interview preparation.

Perfect for those looking to enhance their JavaScript interview prep, this video guides you through the most common coding challenges and technical questions asked by top companies. Learn how to confidently answer JavaScript interview questions for freshers and experienced professionals, while gaining insights into best practices. Get ready to master key concepts like event loops, callbacks, and ES6 features. Whether you’re a beginner or a pro, Intellipaat’s expert-curated JavaScript interview preparation will set you up for success. Watch now to boost your skills and land that dream role!

📖 Below are the concepts covered in the video on 'Javascript Interview Questions for 2025':

🥇 00:00:00 - Introduction to JavaScript Interview Questions And Answers

👨‍💻 JavaScript Interview Questions for Freshers (Basic Level JS Interview Questions And Answers):
00:01:52 - What is JavaScript and its common uses?
00:02:12 - What are template literals in JavaScript?
00:02:59 - What is hoisting? Provide an example.
00:04:09 - Difference between let, var, and const.
00:05:40 - Data types in JavaScript.
00:07:55 - What is an array, and how to access its elements?
00:08:34 - Difference between == and ===.
00:09:12 - Purpose of the isNaN function.
00:10:04 - What is null vs undefined?
00:10:44 - Use of the typeof operator.

👨‍💻 Intermediate Level JavaScript Interview Questions (JavaScript Interview Preparation Guide):
00:11:08 - Purpose of the map method in JavaScript.
00:13:51 - Explain event bubbling and event capturing.
00:20:25 - What are higher-order functions? Provide an example.
00:22:18 - What is an IIFE (Immediately Invoked Function Expression)?
00:24:36 - Explain closures in JavaScript.
00:30:12 - How do setTimeout and setInterval work?
00:35:25 - Describe promises in JavaScript.
00:39:05 - Use of async and await in JavaScript.
00:42:57 - Difference between call, apply, and bind.
00:50:01 - What is event delegation?

👨‍💻 JavaScript Interview Questions and Answers for Experienced (JavaScript Interview Coding Questions):
00:57:46 - Explain the event loop in JavaScript.  
00:59:47 - Difference between promises and async/await.  
01:03:56 - Purpose of the reduce method in arrays.  
01:08:31 - Explain currying in JavaScript.  
01:12:42 - What is a generator function and its usage?  
01:15:57 - What are weak maps and weak sets in JavaScript?  
01:19:39 - How does JavaScript handle memory management?  
01:21:25 - Difference between shallow and deep copying.  
01:25:57 - What is strict mode in JavaScript and how is it enabled?  
01:32:47 - Observer pattern and its relation to JavaScript.

✅ What would you study for an entry-level javascript interview?
For an entry-level JavaScript interview, focus on core concepts like variables, data types, and functions. Study key topics such as loops, conditionals, and arrays, as well as the basics of DOM manipulation and event handling. Understand foundational concepts like closures, scope, and hoisting. 

✅ How to Crack JavaScript Interview?
To crack a JavaScript interview, start by mastering the fundamentals like variables, functions, and loops. Focus on advanced topics such as closures, promises, async/await, and the event loop. Practice coding challenges on platforms like LeetCode and solve common interview questions. Build hands-on projects to showcase problem-solving skills and real-world experience. Finally, review JavaScript design patterns and be ready to explain your code clearly during the interview. Watch this particular video, to understand how you can go about the business and crack your next interview.

📌 Do subscribe to Intellipaat channel & come across more relevant Tech content: https://goo.gl/hhsGWb

▶️ Intellipaat Achievers Channel: https://www.youtube.com/@intellipaatachievers

📚For more information, please write back to us at sales@intellipaat.com or call us at IND : +91-7022374614  US : 1-800-216-8930

Top 30 JavaScript Interview Questions 2025 | JavaScript Interview Questions & Answers | Intellipaat

Top 30 JavaScript Interview Questions 2025 | JavaScript Interview Questions & Answers | Intellipaat

Get Full Course Access

Highly Recommended Courses

Explore top skills

In-demand Careers

Popular Topics

Creative Skills

Business Skills

Choose your learning path