JavaScript Interview Questions #part1

Mandatory JavaScript topics to cover before your frontend interview -

1. The JavaScript Basics:

What is JavaScript and how does it differ from Java?

Explain the differences between null, undefined and not defined?

Discuss the various data types in JavaScript and how to identify them?

2. Functions and Scope:

Differentiate between function declarations, function statement and function expressions?

Explain lexical scope and how closures work?

How does this keyword function in JavaScript?

3. Asynchronous JavaScript:

What are Promises, and how do they improve asynchronous code readability?

Elaborate on the differences between async/await and promises?

Discuss the concept of the event loop and its role in asynchronous JavaScript?

4. Object-Oriented Programming (OOP) in JavaScript:

Explain prototypal inheritance and how it differs from classical inheritance?

What are constructors and prototypes in JavaScript?

Discuss the ES6 class syntax and its role in implementing OOP concepts?

5. JavaScript Best Practices:

Explain the importance of using strict mode in JavaScript?

Discuss the benefits of modular code and how modules are implemented in JavaScript?

How can you optimize JavaScript code for better performance?

6. JavaScript Libraries and Frameworks:

Provide an overview of React, Vue, or Angular, and their key features?

What is the Virtual DOM, and how does it enhance performance in frameworks like React?

Discuss the role of state management libraries in modern web applications?

To delve deeper into these topics, I would like to invite you to a free 1:1 trial call Click here. where we can discuss your specific needs and preferences. Book a call with me, and let's navigate this journey together.

Happy Coding

LinkedIn: https://www.linkedin.com/in/aman-jaiswal-5319a0127/