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JavaScript from Beginner to Expert (Udemy.com)

Become a JavaScript expert in 30 days, even as a beginner! Master JS, React, and Node.js to build web applications

4.5
1,472 reviews

Created by: Arkadiusz Włodarczyk

Last updated September 2026

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What you will learn

  • You will be able to create tooltips, slideshows, galleries with thumbnails and many more
  • You will understand events, variables, objects, arrays, functions, loops, conditional statements, DOM, RegExp, Cookies and use that info in your scripts.
  • You will know how to pre-validate all kind of forms and give users information if something is wrong without reloading the website
  • You will know how to debug and keep your code performing well
  • Quizzes and exercises
  • Support from the author
  • Organised material taking you from the Beginner to Expert level in Javascript
  • let/var/const/hoisting

How it compares

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

  • Rating4.5 out of 5higher than 53% of them
  • Reviews1,472#69 of 240 by number of reviews
  • Length21.4 hourslonger than 86% of them
  • Last updatedSeptember 2026more recently than 99% of them

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Quality Score

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Overall Score : 90 / 100

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Course Description

Would you like to learn JavaScript and become a good earning front-end developer?

After this course, you'll quickly and simply master programming in JavaScript!


WHAT WILL I LEARN?

During this JavaScript course, I’ll show you how to build real-life applications - image sliders, galleries, and more.

Don't worry if you're new to JavaScript! This course is crafted for people starting from scratch.

It doesn't matter whether you have never written any programs or have no idea about programming.

You will bust the myth that programming is a difficult thing only for the few!


WILL I FIND A JOB?

JavaScript developers are in high demand. Learning JavaScript can open doors to junior frontend jobs and freelance work.

JavaScript in business is the choice of leading companies:

  • Google

  • Facebook

  • Instagram

  • Netflix

  • Microsoft

  • TikTok

  • Twitch

WHERE IS JAVASCRIPT USED IN THE REAL WORLD?

You will learn a foundation that will allow you to learn popular technologies used to create back-ends by the above companies, such as: Node.js, Next.js, React.js, Angular.js, Vue.js, Express.js, jQuery.


EXTRA JAVASCRIPT CONTENT YOU’LL LOVE

1)

I've included 2 EXTRA chapters on Debugging and Top strategies for crafting neat, maintainable, and high-performing JavaScript code.

2)

Learn React fundamentals - a JavaScript library used by developers worldwide. You’ll build a mini game to practice everything hands-on.

After completing the game, you will learn:

  • How to use Node.js, npm, and Vite

  • How to create components and manage application state

  • How to use JSX to render user interfaces

  • How to work with props and state

  • How to use CSS Modules for styling

  • How to dynamically switch the theme from dark to light mode

  • How to use ContextProvider

  • How to use the useEffect hook

  • How to integrate external libraries with practical examples

  • How to automatically save the state of your game

And that's not all! You will also learn:

  • How to animate elements according to state using Frame Motion

  • How to add icons with Lucide

  • How to transform a React app into a desktop application using Electron (runnable on any system)

  • Using Express & React with fetch API & JS promises

SATISFACTION GUARANTEE

I give you 100% satisfaction. If you do not like my course, you can request a full refund up to 30 days.

  • Over 350,000 people from around the world have enrolled in my courses

  • My courses are updated if needed


INSTRUCTOR SUPPORT

Remember that if you have any questions regarding topics covered in the course, please feel free to ask.

I'm always happy to help! :-)


SECURE PURCHASE

Have a look at free lessons before buying!

Get a taste of the top-notch stuff this course is made of and have a blast!

Become JavaScript Expert today!

Save your precious time by buying this course.

Read More All Levels All Levels product length iconTime: 21.4h

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Instructor Details

Arkadiusz Włodarczyk

I believe that everyone has the ability to develop software if they are taught properly. 

Including you. 

I’ll make sure you know the basics before we move on. After my course, you will finally understand everything that you code.

I've been programming & developing websites for over 20 years.

I've done a lot of work in that field, and today I want to share what I've learned with you.

I've created 27 very popular video courses about programming, web development, and math.

Over 350,000 students have enrolled in my Udemy courses.

If you have any questions regarding any of the topics covered in my courses, please feel free to ask! :-)

Read More

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Reviews

4.5

1,472 ratings on Udemy

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Write a review

By Berk Akar on 9/29/2021

If you have previous experience on other languages and if you want to jump start to javascript, this course is for you indeed. I benefit so much from the couse. Some of the ideas and tricks (like using prototypes in Dates) is very good. This course may be extended a little by giving an example of binding with a server side language, or pagination example. Many thanks to Arkadiusz.

By Benjamin Tamba KAMANO on 12/20/2020

Great course! Thx u!

By Emmanuel Pulido Castro on 9/10/2020

excellent course

By SatishKumar on 8/16/2020

Good Course

By Pratiksha Vaidya on 7/15/2020

It could be great if JQuery and Ajax would have added in it.Amazing Experience.
Learned lot new things.

By M. Ins Melero Sastre on 7/8/2020

Estara genial que fuese en Espaol

By Rafael Vegazo Unamuno on 6/10/2020

Todo perfecto!!

By Dayong on 6/7/2020

Thank you for your teaching.

By Chukwufunanya Konwea on 5/20/2020

As a beginner, I would say it has been easy to follow the course so far.

By Manni Koya on 5/16/2020

The Course and instructor were excellent

By Ho Phuoc Sang on 3/19/2020

This is a good course :D

By Md Faiyaz Alam on 3/18/2020

thanks.i learn a lot

Showing 12 of 240 reviews

JavaScript from Beginner to Expert
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  • Video Duration: icon 21.4h
  • Price: See price on Udemy
  • Provider: icon Udemy
  • Updated: icon September 2026
  • Level: All Levels All Levels
  • Language: icon English
  • Certificate: icon Yes
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