16 JavaScript Concepts JavaScript Professionals Must Know Well

July 9 Last Year

(Essential JavaScript Concepts for Modern JavaScript Development )

If you plan to work as JavaScript Professional, there are some JavaScript concepts and JavaScript-related web-development technologies that you must know well, particularly as a modern JavaScript developer. If you know the 16 concepts enumerated below very well, you have the skill necessary to build world-class modern JavaScript web applications, and you are set for the near future—0-3 years.

I will expound on each of these sixteen concepts, and I am hopeful all of us will have become better JavaScript programmers by the time we get through all of them. I have completed most of the 16 concepts with just a few more to go, so keep reading and learning. And sign up on the homepage for the newsletter to get the latest updates.

I trust you have learned JavaScript properly or you already know JavaScript enough to build a simple JavaScript-only web application. While the 16 concepts enumerated below are neither complex nor difficult, you will get the most benefit from them if you already know at least some basic JavaScript.

These are the sixteen concepts that every modern JavaScript developer must know well:

  1. JavaScript Objects in Detail
  2. JavaScript Prototype in Plain, Detailed Language
  3. JavaScript Variable Scope and Hoisting Explained
  4. Understand JavaScript Closures With Ease
  5. Understand JavaScript Callback (Higher-Order) Functions
  6. Understand JavaScript’s “this” With Clarity, and Master It
  7. JavaScript’s Apply, Call, and Bind Methods are Essential
  8. Learn HTML5, CSS3, and Responsive WebSite Design
  9. Object Oriented JavaScript (OOP in JavaScript)
  10. Learn Node.js Completely and With Confidence Or Learn Meteor.js and Embrace the Future (coming soon)
  11. JavaScript Custom Events with PubSub (Published in 3 weeks—around August 2)
  12. Unit Testing Your JavaScript Applications is Essential (Published in 5 weeks—around August 14)
  13. DOM (Document Object Model) and BOM (Browser Object Model)
  14. ECMAScript 3 and 5
  15. The Best JavaScript Front-end Frameworks You Should be Using
  16. Preventing and Handling JavaScript Errors and Debugging Your Code

Thanks for your time; please come back soon. Email me here: javascriptissexy at gmail email, or use the contact form.


  1. Great information. Lucky me I ran across your website by chance (stumbleupon). I have book marked it for later!

  2. Dieter

    In which year you publish your articles? ;-)

    • Richard Bovell

      Dieter, I had to chuckle when I read your comment, because you are correct. I had not been sticking to my own schedule, and it probably seems like those dates for upcoming posts were for another year :).

      I uploaded 2 new posts within the last 2 days and I plan to add 2 more today.

      • Karam

        Man, I’m loving your posts, i’m going through learning JS properly. is there any chance you will continue posting or did you stop?

  3. Tyler Shipe

    I’m enjoying this series. Thank you for your work!

  4. Hi there everyone, it’s my first go to see at this web site, and article is genuinely fruitful in favor of me, keep up posting such posts.|

  5. mjankowski

    great blog! I’ve been using JS for years and I didn’t know many of those techniques!

  6. Mike

    will you be writing an article for each of the 16 concepts above, as currently only the first 4 link to an article?

    • I had plan to originally, and i have written many of them already. I have to update this article, which I will do in about a week. And I will likely write the rest of the article over the coming months.

  7. David Carrus

    I’d really like to thank you, for pointing me to the right direction in my “javascript quest”.

    I studied a lot of things following your articles and / or suggestions and i found them so helpful that i felt the need of thanking you.

    Keep up the good work, i’m going to follow your articles.

  8. mkaze

    Thank you so much! Your blog is great and I think you are a great man, too.

    Many Many Thanks!

  9. mona

    great tutorials! .. understandable explaination!!

  10. very useful and great article

  11. Cakness

    Bookmarked for glory!

  12. Tanvi P

    Enjoying the series! Waiting for next posts :)

  13. Hi I am so grateful I found your site, I really found you by accident, while I was looking on Digg
    for something else, Anyhow I am here now and would just like to say cheers for a incredible
    post and a all rpund thrilling blog (I also love the theme/design), I
    don’t hace tim to go through it all at the moment but I hsve saved
    it and also included your RSS feeds, so when I have time I will be back to read
    a loot more, Please do keep up the excellent work.

  14. Rajiv Kumar Gogoi

    Awesome website, definitely one of the best javascript websites…Great work!!!

  15. Joy Misaal

    I love the series. It has been very helpful. However, I really wish the remaining posts come up soon.

  16. Richard – Thank you so much for all of the resources that you have put online. I had struggled to grasp a lot of concepts before finding your site and the way that you explain things in plain english with extremely easy to follow examples is a life saver. //love the explanations inside the examples

    I am really excited to see the rest of the posts that are promised on this list. I’d much rather read your articles than Javascript: The Definitive Guide

    Thanks again!!

  17. Marcel dos Santos

    Hey man, congratulations for this great work! The way you explain the concepts are awesome… I’m learning a lot and following all ’16 JavaScript Concepts JavaScript Professionals Must Know Well’ lessons… I’m to anxious to the 11th and 12th lessons… Please, keep your great work!

    Greetings from Brazil,

    Marcel dos Santos

  18. Thanks for taking time to list up all the topics. They are really good.

  19. Pretty nice post. I just stumbled upon your blog and wished to say that I have truly enjoyed surfing around your blog posts.

    In any case I’ll be subscribing to your rss feed and I hope you write again

  20. tc

    Thank you so much! These best JS tutorials I have come across. Perfect for me @ my current skill level.

  21. Spot on with this write-up, I honestly feel this website needs
    much more attention. I’ll probably be returning to read
    more, thanks for the information!

  22. Sabal Prasain

    It’s awesome ! Love these posts !! Thanks !!!

  23. frog

    Is the site dead?

  24. Vinayak

    Great post .. Thanks Richard..!!

  25. Hey! Great articles!

    Are you publishing the missing parts any time soon? :)


  26. Very good site for learning JS.

  27. praveen

    Hi Keep up the good work sir.The article are really good.

  28. This design is spectacular! You definitely know how to keep a reader amused.
    Between your wit and your videos, I was almost moved to
    start my own blog (well, almost…HaHa!) Great job.
    I really enjoyed what you had to say, and more than that, how you
    presented it. Too cool!

  29. Good respond in return of this question with real arguments and describing
    the whole thing concerning that.

  30. Richard – thanks for this. Being new to JS myself, this is gonna be something I may return to often.


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