Java Script Interview Questions

Author: neptune | 09th-May-2022
#JavaScript #Interview

Basic JavaScript questions asked in interviews

1. What are the different data types present in javascript?

2. Explain Hoisting in javascript.

3. Difference between "==" and "===" operators.

4. Explain Implicit Type Coercion in javascript.

5. Is javascript a statically typed or a dynamically typed language?

6. What is NaN property in JavaScript?

7. Explain passed by value and passed by reference.

8. What is an Immediately Invoked Function in javascript?

9. Explain Higher Order Functions in javascript.

10. Explain "this" keyword.




11. Explain call(), apply() and bind() methods.

12. What is Currying in javascript?

13. Explain Scope and Scope Chain in javascript.

14. Explain Closures in JavaScript.

15. What are object prototypes?

16. What are callbacks?

 17. What is memoization?

18. What is recursion in a programming language?

19. What is the use of a constructor function in javascript? 

20. What is DOM?

Explore more
#JavaScript #Python #Hackerrank #Motivation #AI #React.js #Interview #Testing #SQL #Selenium #LeetCode #Problem Solving #Machine learning #IT #API #Java #GPT #AWS #Algorithms #Github #Projects #Jobs #Django #Microservice #Certifications #Node.js #TCS #Google #Story #Pip #Data Science #Postman #Health #Twitter #Elon Musk


Related Blogs
Where you applied OOPs in Automation Testing?
Author: neptune | 28th-Aug-2023
#Interview #Java
You may face this question Where you have applied OOPs concept in Automation Framework? in almost all the Selenium Interviews. Let's learn OOP’s concept in Java before going further...
Top 50+ Selenium Interviews Questions 2023 based on Years of Experience
Author: neptune | 02nd-Apr-2023
#Selenium #Testing #Interview
Every interview difficulty is based on how many years of experience you have in that field. For the Selenium Automation Tester I have divided the question on the number of years of experience...
30+ SQL Interview Questions
Author: neptune | 05th-Jan-2023
#Interview #SQL
Data Definition Language (DDL) – It allows end-users to CREATE, ALTER, and DELETE database objects...
Managing Virtual Environments in React JavaScript Projects
Author: neptune | 28th-Jun-2023
#JavaScript #React.js
Virtual environments are a valuable tool in React JavaScript projects as they allow developers to isolate dependencies, manage package versions, and maintain project consistency...
Black Mirror Season 6: A Glimpse into the Future of Technology and Society
Author: neptune | 27th-Apr-2023
#Interview
Black Mirror Season 6, starring Salma Hayek and Aaron Paul, promises more violence and thought-provoking explorations of technology and society...
Top 20+ Appium Interview Questions and Answers (2023)
Author: neptune | 30th-May-2023
#Interview
This article provides a comprehensive list of 20 common interview questions on Appium mobile automation, covering various topics and providing solutions for each question...
A Guide to Writing Clean, Readable, and Maintainable Code in JavaScript
Author: neptune | 23rd-Feb-2024
#JavaScript
By incorporating these principles into your coding practices, you contribute to creating code that is not only functional but also maintainable and easily understandable by your peers...
From REST to GraphQL: The Future of API Design
Author: neptune | 25th-Feb-2024
#JavaScript
Unlike traditional REST APIs, GraphQL provides a more flexible and intuitive approach to data querying and retrieval...
Skills Required for Full-Stack Developer at IBM Onsite, CA
Author: neptune | 25th-Feb-2024
#Interview #Jobs
The company's commitment to pushing the boundaries of what is possible necessitates a team of skilled professionals...
How I Built My Blogging Website Using React, Node.js, and Jamstack Architecture?
Author: neptune | 05th-Jul-2024
#JavaScript #API
Building a blogging website using React, Node.js, and Jamstack architecture was a rewarding experience...
What is a Module in Node.js?
Author: neptune | 20th-Jun-2024
#Interview #Node.js
In Node.js, a module is a reusable block of code whose existence does not accidentally impact other code...
Backend Developer Mock Interview | Interview Questions for Senior Backend Developers
Author: neptune | 28th-Jun-2024
#Interview #Node.js
Why did you choose this tech stack: React, React Native, Node.js, MongoDB, and Azure? We needed to create a cross-platform application...
Why, What, and When: Understanding Jamstack?
Author: neptune | 05th-Jul-2024
#JavaScript #API
Jamstack represents a modern approach to web development that addresses many of the challenges faced by traditional architectures...
How to Get Started with Jamstack: A Comprehensive Guide?
Author: neptune | 05th-Jul-2024
#JavaScript #API
Getting started with Jamstack involves choosing the right tools, setting up a structured development environment...
How to Perform Unit Testing in React Components with Examples?
Author: neptune | 25th-Jul-2024
#JavaScript #React.js
Unit testing in React is an essential practice to ensure the reliability and robustness of your components...
Do you know ! How to manage State in Functional & Class Components in React ?
Author: neptune | 25th-Jul-2024
#JavaScript #React.js
State management in React has evolved significantly with the introduction of Hooks...
View More