The Fastest Javascript Course: From ZERO to HERO in 6 Hours (Udemy.com)
Complete Project-Based JavaScript with ES6+, JS Best Practices, HTTP Requests to APIs, JSON and more
Created by: Ivan Lourenço Gomes
Last updated May 2023
What you will learn
- Javascript Core Constructs: Data Types, Conditionals, Loops & Functions
- Advanced ES6+ Features
- HTTP Requests to APIs
- Data & Time Functions
- Error Handling
- JavaScript for Web: HTML, CSS and DOM Manipulation
- Image Galleries & Product Filters with JavaScript
- Advanced Methods for Arrays and Objects
Quality Score
No CourseDuck member has rated this course yet. Taken it? Give each part a thumbs up or down.
Overall Score : 92 / 100
Course Description
Javascript is the most used programming language in the world. After almost 30 years since the first release, its popularity continues to spread as the community grows and more robust frameworks are launched frequently.
Learning Javascript will open a brand new world of opportunities for you. Whether you need to learn Javascript for an ongoing project, to apply for a job, or simply because you want it now, here you will find all the resources you need.
This course is also a great choice for businesses as a web development training resource.
Our Project-Based Approach
This course was designed for people with fast-paced lives, that don't have time to waste. In the very first lesson, you will be presented with a project you will build from start to finish.
This project has multiple Javascript components that will enable you to learn beginner, intermediate, and advanced Javascript concepts while you build them.
Here's a summary of these components:
• The popular animated mobile menu, that opens and closes with a slide effect.
• A real-time weather information section, with data retrieved from The Weather Map API.
• A temperature conversion switch
• A local-time clock that runs on the page.
• An image gallery with thumbnails.
• A product section populated from a JSON object.
• A product filter that showcases free, paid, or all products.
All The Fundamentals of Javascript Covered
Although this is a fast project-based course, we made sure to cover all the fundamentals of Javascript.
While you get the thrill of solving challenging Javascript problems within the project, you will learn all these topics in detail:
• Javascript Syntax
• Code Organization & Best Practices
• The Document Object Model (DOM)
• HTML & CSS Manipulation
• Events
• Variables
• Data Types
• Functions
• Conditionals
• Loops
• Date & Time
• Geolocation
• How to Work With External APIs
• HTTP Requests & the Fetch Method
• Error Handling
• ES6+ Functions
This Is Your Opportunity
This course offers a certificate of completion, lifetime access, and a 30-day money-back guarantee. It's a risk-free opportunity for you to learn Javascript today!
About the Instructor
This course is ministered by Ivan Loureço Gomes, a top-rated Udemy instructor, famous for his easy-to-follow and hands-on teaching style. Ivan has 8 years of professional experience in IT areas, such as web design, front-end web development, software testing, agile methodologies, project management, and team building.
With 18 courses published in 4 languages. he knows how to deliver the best and most engaging content for students.
Instructor Details
- 4.6 Rating
3,208 Reviews
Ivan Lourenço Gomes
Ivan is a leading tech educator on Udemy.
With 30+ courses under his belt and a community of over 500,000 students worldwide, Ivan's here to guide you through the tech and business skills you need today.
With a solid experience of 18 years in various business and technology sectors, Ivan has dedicated himself since 2016 to transforming his expertise into accessible learning paths for a global audience.
Renowned for a dynamic teaching style that mixes project-based learning with incremental challenges, his courses are the right fit for you, whether you're just starting your learning journey or looking to deepen existing skills.
His courses cover essential foundations and cutting-edge trends in technology and business communication:
• Web Development Essentials: Dive into the world of web development with courses on HTML/CSS and Javascript, and master the art of creating engaging, responsive websites.
• Advanced Frontend Frameworks: Elevate your web projects with Vue JS, React JS & TypeScript, focusing on building dynamic, user-centric applications.
• Software Best Practices: Gain proficiency in Git for version control, ensuring your projects are managed with industry-standard efficiency.
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Reviews
By Phillip Campbell on 7/27/2026
I am using this as supplemental learning for a course I'm in. The progressive project is helping me better understand how JavaScript works in/on a web page and helping it stick more.
By Lsingla on 6/28/2026
This was perfect course for what I was looking for. Right amount of detail, excellent project, excellent coverage of the topics and no dumbing down. thanks.
By Peter Kenny on 4/27/2026
I'm very happy with this course. I'm doing another JavaScript course, but it's more theory than practice. This course is more practice than theory, so it was a welcome break from the other course. This course is brilliant, very well presented and explained, and has helped me firm up my understanding of JavaScript. Highly recommended. I hope the teacher does more similar courses.
By Seyma Ozdemir on 3/8/2026
Pretty helpful, covered the basics. I wish that more explanation was given in certain steps, I think that this course is meant for those who understand HTML elements etc. beforehand. Overall, I now understand the basics of JS and can hopefully work on my own project now! Thank you for this course.
By Daniel Antunes da Silva on 2/19/2026
I really enjoyed this course. The instructor explains everything clearly and gets straight to the point. I started the course to practice my English while learning JavaScript, and I was surprised to find out he’s Brazilian like me haha. Parabéns pelo curso direto ao ponto, Ivan!
By Eswara Putluri on 2/17/2026
The way of teaching is nice and easy to understand. you can give introduction about every topic, it will very help full to prepare notes and revise later.
By Ahmed Khan2 on 1/21/2026
Everything was good, but the weather API part is a bit outdated now as openweathermap requires billing info for a subscription even if its free. I combatted this by using open-meteo which is free and does not require an API key or signing in.
By Amal Saadat on 12/21/2025
This class was awesome until the weather API forced us to put CC information in (might be something new). I couldn't figure out my settings that wouldn't allow me to do the geolocation part in the console unless it was "user triggered" or something like that in the console was the error I kept getting, which took me so long to troubleshoot.
By Santhoshkumarc1 on 12/15/2025
The explanation with real time project is good. but should have given general explanation on other concepts related to it instead of showing the w3pages. But still the course is worthy.
By Alexander Maundrell on 11/15/2025
I learned quite a bit taking this course. It has renewed my enthusiasm for increasing my skills. Well worth the money and time!










