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The JavaScript Bible - JavaScript Bootcamp (Udemy.com)

Understand and learn JavaScript and ES6 in a one challenge-based JavaScript Bootcamp course!

Created by: Bogdan Stashchuk

Last updated September 2026

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What you will learn

  • Become a Senior JavaScript developer by learning and practicing all modern features of the JavaScript. Become able easily apply to Web Developer, Frontend Developer, Backend Developer or Full Stack Web Developer jobs.
  • Learn JavaScript, ES6, NPM, Webpack, Babel, Node, React by solving tens of CHALLENGES with real-world scenarios. Each CHALLENGE has task and solution. And all of them are available in the GIT repositories that you will download at the beginning of the course.
  • Learn all FUNDAMENTAL features of the JavaScript starting from basic concepts such as Variables, Objects, Functions, Scopes, Operators and finishing with ADVANCED topics as Closures, Hoisting, IIFEs (Immediately Invoked Function Expressions), Classes and many more.
  • Learn and understand ES6 features such as Arrow functions, Destructuring, Default function parameters, Template Literals, Array helper methods, Classes

How it compares

Against the other 239 rated Udemy courses in JavaScript on CourseDuck:

  • Rating4.8 out of 5higher than 93% of them
  • Reviews1,916#61 of 240 by number of reviews
  • Length42.5 hourslonger than 94% of them
  • Last updatedSeptember 2026more recently than 100% of them

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Quality Score

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Overall Score : 96 / 100

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Course Description

This course covers everything you need to know about JavaScript and become either Frontend Web developer, or Full-stack Web Developer, or Backend developer.

This course includes more than 70 CHALLENGES and all exercise files are available in Git repositories.

We will start from the very beginning and you will learn fundamentals and basic concepts of JavaScript.

Than you will learn new features included in ES6, ES7 etc.

Also we will dive into the Node.js - environment for JavaScript code execution and you will understand what is the difference between Web Browser and Node.js.

In separate sections we will discuss Babel, NPM, Webpack and MongoDB.

Also you will learn most popular JavaScript framework - React.


JavaScript Bible was designed for developers with different levels of JavaScript knowledge.

If you are BEGINNER in JavaScript - start with very first section called JavaScript Basics.

In case you have SOME experience with JavaScript - jump directly in the sections where I cover ES6 topics such as rest/spread parameters, arrow functions, ES6 Classes etc.

If you are experienced MIDDLE or SENIOR developer with years of JavaScript development background - jump directly into the Challenges and test your knowledge. Each challenge has task and solution in separate Git branches.


All videos have different labels:

  • LECTURE: in those videos I explain different features and concepts of the language. Main main goal in those videos is to teach you HOW specific feature work under the hood. I don't teach HOW TO USE feature.

    Instead I teach you WHY and HOW specific feature works.

  • PRACTICE: here I will dive into the coding and show you different real-world examples of the usage of specific feature. Usually I will present to you several examples for each specific feature. I strongly recommend you to follow me in those videos and code along with me.

  • CHALLENGE: each challenge (except simple and short challenges) has START and FINISH branches with task and solution. PLEASE don't skip challenges even if you are already familiar with the topic. Try to solve each challenge yourself.

  • DEMO: in some videos I will demonstrate you examples where you don't necessarily need to follow me and code along with me

If you want to become an Expert in JavaScript, please join this course now!

See you onboard!

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Instructor Details

Bogdan Stashchuk

Do you really want to understand and practice instead of sitting and watching long presentations or trying to code along without any clue what is happening behind the scenes?

Join me in any of my courses and you will get real knowledge based on the deep understanding of every single topic.

But who am I?

My name is Bogdan Stashchuk and I teach students more than 20 years. I am working as Software Engineer and love to teach and learn myself.

I have a huge experience in explaining difficult things in an easy to understand format backed up with practice activities. That is the perfect combination that enables you to really learn and retain gained knowledge for a long period of time.

Let's connect in the Social Networks! All links you could find under the profile picture.

See you on my courses!

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Reviews

4.8

1,916 ratings on Udemy

Select a bar to show only those reviews.Select the bar again to show every rating.

By Sergei Kniazhentcev on 6/27/2024

This is awesome course, still relevant in 2024. All the topics covered are explained in great details, with practical examples and challenges. This course gives very strong understanding of core JavaScript concepts from where you can move on further - e.g. to TypeScript, JS frameworks, etc. Be aware, that the course does not contain anything about async javascript - async/await, promises, etc.

By Matthias George on 8/17/2023

Very thorough teaching and explanation. Ive been through a number of other courses but Im yet to come across one that is so detailed, full of examples and deliberately patient instruction. This is a true lecturer and teacher. Many others I think just rush through, assume that the listener knows what theyre talking about. But here we are taken through step by step line by line inch by inch thorough teaching.... a straight 100% from me.

By Eduard H. van Kleef on 2/9/2023

This is a good course. As in most cases, Bogdan gives his best to also show things "under the hood", i.e. what is behind some complicated concepts. But: in 2023 it should not be necessary any more to introduce ES6 as a special case. ES6 (or later) should be the standard. Reaching back to ES5 and before should be a special case, treated in an appendix. In view of this, the organisation of the course could be better. Also, how can it be that for a course of this length, there is no explanation of asynchronous JS and/or DOM methods? It is nice to have so many optional/appendix sections, but they cannot be skipped without losing the certificate (this goes against udemy, they need to find a way around this). So this course takes a long time to absolve and may still leave you with a somewhat confused and incomplete picture.

By Anonymized User on 12/3/2021

Bogdan Stashchuk has outdone himself with this course. I liked his approach of focusing on the JavaScript language's syntax and grammar rather than rushing to cover Web APIs, which is a common problem with JavaScript courses. The code snippets he used for lectures and challenges never overwhelmed, and their compactness allowed me to better concentrate on what was going on without getting lost in a sea of code. The videos on build tools like Babel and webpack were excellent and informative supplements. Any drawback that I could mention (as far as I could tell, Symbols were mentioned in passing, but never completely explained) isn't worth complaining about since the course is so valuable. For this reason I am still assigning a five star rating.

By Yogesh Kulkarni on 7/23/2021

Good course for absolute beginners. This course will definitely strengthens the JavaScript fundamentals, including some of ES6 features. All the concepts covered in course are explained very well. After finishing this course, you can definitely go for any advanced course that prerequisites JavaScript. The challenges given during the tutorial and in the final sections will help you practice what you have learnt. Some of advanced concepts are missing like promises, async/await, etc. Thus not giving 5 stars.

By Dimitrij Kolničenko on 4/13/2021

Bogdan is definitely very competent and thorough teacher. It is obvious that he had put a lot of effort to this course. There is just one field which could be improved - the course is primary aimed on theory and I found that there is lack of more practical expamples which can be used in real-world scenarios. Anyway, I think that it deserves full rating - the effor put in this course is obvious.

By Mustafa Cete on 8/8/2019

Hi Udemy, First of all thanks for creating this platform and giving us this chance to give our opinions on the services you and valuable teachers/developers are providing for us... What can I say about this coure? I think it is hard to describe how much I appreciate this course... I've studied many courses on JS and this one so far was the best among them... Mr. Bogdan is a great teacher and I can see that he deeply masters JS he is teaching and the way he explains the subjects is very professional and clear. The examples he gives are just exactly to the point... Some subjects I had a hard time before in understanding was much clearer after I watched his videos... I usually don't have time to write long reviews and I am -unfortunately- little bit lazy for this but I wanted to take time and write here as a way of thanking this great teacher...I could write more and more... Thank you very much for this course Mr. Bogdan... My deepest respects... Mustafa, Istanbul, Turkey...

By Michael Pritchard on 3/8/2019

I have completed 19 programming related courses on uDemy over the last 6 months and this is by far the best! The tutor has excellent knowledge of JavaScript, the lessons are well planned with clear explanation lectures, then practice and challenge sessions. There are also regular additions to the course. Even before completing this couse I've enroled on another couse by Bogdan.

By Kevin Kiernan on 2/8/2019

Very good, well laid out and engaging course, lots of examples and exercises with detailed and thorough explanation of content, examples and challenges. From detailed walk through of set up to interesting and relevant additional points made in each section an enjoyable but challenging comprehensive course. Impressed with the lecturer for engaging style, methodical approach, knowledge and enthusiasm for the subject matter presented. Thnx

By Lionel Gibaudan on 11/26/2018

Great course... [edit from jan,14 - 2019] I'm now half the course and it is really fantastic to learn all these things about Javascript. The Array helpers section deserves by itself to buy this course. I can't wait to see the new sections that will be added soon. [end of edit] I've already viewed some videos and I'm very enthusiastic about this course. The author masters the subject, the videos are clean, very readable and accurately zoomed. The voice of the instructor is warm, strong and clear, well articulated, very understandable and even if he has a very slight accent, it's not a problem. The topics are wellexplained. I really can't wait to go deeper in this great and thorough tutorial...

Bogdan is a terrrific teacher and so far his best advice has been to practice, practice, practice...It's my motto for good living and it really works extremely well when you are studying...I'm loving this course...This not my final review...Not even half way through the course, but I had to give Bogdan some props...He makes JavaScript digestable...Thanks Bogdan!...Now I'm back to practicing, practicing, practicing...It's a good thing!

Great Course.
I have learned lot of things that i didn't know before.
highly recommended.

Showing 12 of 56 reviews