JavaScript Interview Questions Course

Are you ready to ace your next Javascript interview? Our Javascript Interview Questions course is designed to give you the skills and knowledge you need to successfully answer even the toughest questions and land the job of your dreams. With our practice questions and answers, you’ll be prepared to answer questions on topics including JS data types, functions, and objects, as well as higher-level concepts such as asynchronous programming, closures, and ES6. Our course also includes detailed explanations of the answers and tips to help you think through tricky questions. You’ll be confident and ready to impress interviewers with your Javascript skills in no time! Learn now

JavaScript Interview Questions course difficulty level is beginner . We scale courses on a three-level scale. Beginner fits even total beginners. Mid is for people with some knowledge, and advanced level is for people who know the topic and have some coding skills. Learn now

JavaScript Interview Questions course is planned for 9h of work. Learn now

How you will learn during JavaScript Interview Questions course

With Duomly you can learn from various types of courses. Learn now

This course is the theory one, what it means you will learn from interactive lessons: step by step explanation deep knowledge interactive text certificate of completion

What you will learn in JavaScript Interview Questions course

Every Duomly’s course is designed to give you the most important parts of the topic. Learn now

What is closure

What is DOM

What is Promise

What is prototype

What is hoisting

What is a pure function

What is constructor

What are Javascript classes

What is the difference between var, let, and const

What are self invoking functions

What is spread operator (...)

What is Prototypal Inheritance

What is Functional Programming

What is Object Oriented Programming

This keyword

What is the difference between double and triple equals

What is scope

Asynchronous Programming

How would you improve performance of your Javascript code

What are bind(), call(), and apply() methods

What is the difference between Local storage and Session storage

What is "use strict”

What are useful features of ES6 and newer Javascript versions

How can you check if object is an array or not

Explain what is callback hell in Javascript and how to avoid it

What is .map() method

What is Event Loop

How do you debug code

What is the purpose of using a try-catch block

difference between synchronous and asynchronous code

What is a Callback Function

What is the purpose of using arrow functions

How do you define a higher-order function

What is the difference between an event listener and a callback

What are the different ways to loop over an array

What is the purpose of using a ternary operator

Different types of hoisting

How would you implement a linked list data structure

What is the purpose of generator functions

Different ways to handle errors

Implement a binary search tree data structure

What is the purpose of using the WeakSet object

What is the purpose of using the Symbol Object

What is the purpose of using the Proxy Object

What is the purpose of using the WeakMap

What is the purpose of using the Reflect API

Different Types of Data Structures

How to implement a priority queue data structure

How to remove duplicates from an array

What is object destructuring with spread

What is the purpose of using the reduce() method

What is the purpose of using the Map object

Object.freeze() vs Object.seal()