JavaScript Interview Questions - Coding Interview 2025

Prepare for next JavaScript coding interview by doing practice questions. Learn javascript skills & concepts.

This course is great preparation for any javascript programming interviews that you may have coming up. Programming interviews need a lot amount of knowledge, but the best way to prepare for interviews is a lot of practice! In this course you will complete 59 javascript interview questions that come from real javascript interviews. There are no excersises that nobody asks here. In every question we will get a task first, then you will try to solve each problem yourself, and then I will show you different solutions to each problem step-by-step for different programmer levels. We will take a deep dive into the skills, concepts, and techniques that are required to solve each problem.

When you have completed this course you will have mastered the 59 interview questions that we will cover, but you will also have learned the concepts, skills, and techniques, that are necessary for you to excel in any other interview questions you may be asked. You will feel very confident going into any javascript programming interviews you will have. On top of all this, you will strengthen your javascript programming skills and javascript fundamentals in overall.

Core topics of the course:

• Closures

• Hoisting

• Currying

• Classes & Prototypes

• Modules

• Working with DOM

• Asyncronous Javascript (Callback, Promises, Async await)

• Memoization

• Transforming data with real world tasks

• Creating own utility functions