Learn Advanced JavaScript Syntax and Features Online: Free Course with AI Tutor & Certificate
In just about 1 hour across 81 video lessons, this free course teaches you advanced JavaScript. You'll master ES6 modules, promises, and functional programming concepts. By the end, you can write cleaner code and handle asynchronous tasks, preparing you for modern web development roles.
Advanced JavaScript Syntax and Features course syllabus
01 Introduction to Advanced JavaScript Syntax
- Arrow Functions
- Template Literals
- Rest and Spread Operators
- Destructuring Assignment
02 Promises and Async/Await
- Understanding Promises
- Chaining Promises
- Async Functions
03 ES6 Modules
- Import and Export Syntax
- Dynamic Imports
- Module Patterns and Best Practices
04 Advanced Array Methods
- Map and Filter
- Reduce
- Array Searching and Iteration Methods
- Chaining Array Methods
05 Object-Oriented Programming in JavaScript
- Classes and Constructors
- Inheritance and Prototypes
- Static Methods and Properties
- Encapsulation and Abstraction
06 Error Handling and Debugging
- Try...Catch Statements
- Debugging Techniques
- Handling Asynchronous Errors
07 Functional Programming Concepts
- Higher-Order Functions
- Pure Functions
- Immutability
- Function Composition
08 Advanced JavaScript Patterns
- Singleton Pattern
- Factory Pattern
- Observer Pattern
- Module Revealing Pattern
09 Asynchronous Programming Patterns
- Callback Hell and Promises
- Event Emitters
- Thunks and Generators
- Observables and RxJS
10 Browser APIs and DOM Manipulation
- 1 Fetch API
- 1.1 Making HTTP Requests|Understanding how to use the Fetch API to make network requests and handle responses.
- 1.2 Async/Await with Fetch|Learning how to use async/await syntax to work with the Fetch API for cleaner code.
- 1.3 Error Handling with Fetch|Exploring error handling strategies when using the Fetch API to ensure robust applications.
- 2 Local Storage
- 2.1 Storing Data Locally|Understanding how to use the Local Storage API to store data in the browser persistently.
- 2.2 Retrieving and Managing Data|Learning how to retrieve and manage data stored in Local Storage.
- 2.3 Best Practices for Local Storage|Discussing security considerations and best practices for using Local Storage in web applications.
- 3 WebSockets
- 3.1 Introduction to WebSockets|Understanding the WebSocket protocol and how it enables real-time communication.
- 3.2 Establishing WebSocket Connections|Learning how to establish a WebSocket connection and handle messages.
- 3.3 Practical WebSocket Use Cases|Exploring practical use cases for WebSockets, such as chat applications and live data feeds.
- 4 Manipulating the DOM with JavaScript
- 4.1 DOM Selection and Traversal|Understanding how to select and traverse DOM elements using JavaScript.
- 4.2 Creating and Modifying Elements|Learning how to create new DOM elements and modify existing ones.
- 4.3 Event Handling and Delegation|Exploring event handling techniques, including event listeners and event delegation for efficient DOM manipulation.
11 Testing and Debugging JavaScript Applications
- 1 Unit Testing with Jest
- 1.1 Introduction to Jest|Understanding the basics of the Jest testing framework and its features.
- 1.2 Writing Test Cases|Learning how to write test cases using Jest for JavaScript functions and classes.
- 1.3 Mocking Dependencies|Exploring how to mock dependencies in Jest to isolate and test individual components.
- 2 Integration Testing
- 2.1 Understanding Integration Testing|Learning about integration testing and how it differs from unit testing.
- 2.2 Writing Integration Tests|Understanding how to write integration tests that verify the interactions between different parts of the application.
- 2.3 Tools and Frameworks|Exploring tools and frameworks that support integration testing in JavaScript applications.
- 3 Debugging Tools for JavaScript
- 3.1 Browser DevTools|Understanding how to use browser developer tools for debugging JavaScript applications.
- 3.2 Source Maps and Debugging|Learning about source maps and how they help debug minified or transpiled code.
- 3.3 Advanced Debugging Techniques|Exploring advanced debugging techniques, such as memory leak detection and performance monitoring.
- 4 Test-Driven Development (TDD)
- 4.1 TDD Principles|Understanding the principles and workflow of test-driven development.
- 4.2 Implementing TDD with JavaScript|Learning how to implement TDD in JavaScript using testing frameworks like Jest.
- 4.3 Benefits and Challenges of TDD|Discussing the benefits and challenges of adopting TDD in JavaScript projects.
12 Performance Optimization in JavaScript
- 1 Memoization
- 1.1 Understanding Memoization|Learning about memoization and how it can improve performance by caching function results.
- 1.2 Implementing Memoization|Understanding how to implement memoization in JavaScript functions.
- 1.3 Use Cases and Limitations|Discussing when to use memoization and its limitations in terms of memory usage.
- 2 Debouncing and Throttling
- 2.1 Debouncing Explained|Understanding the concept of debouncing and how it can prevent unnecessary function calls.
- 2.2 Throttling Techniques|Learning about throttling and how it differs from debouncing by limiting the number of function calls.
- 2.3 Practical Applications|Exploring practical applications for debouncing and throttling in user interface interactions.
- 3 Web Workers
- 3.1 Introduction to Web Workers|Understanding how Web Workers can run JavaScript in background threads.
- 3.2 Implementing Web Workers|Learning how to implement Web Workers and communicate with the main thread.
- 3.3 Use Cases for Web Workers|Discussing scenarios where Web Workers enhance performance by offloading tasks from the main thread.
- 4 Code Splitting and Lazy Loading
- 4.1 Code Splitting Basics|Understanding the concept of code splitting and how it can reduce initial load times.
- 4.2 Implementing Lazy Loading|Learning how to implement lazy loading to dynamically load modules or components when needed.
- 4.3 Best Practices for Performance|Discussing best practices for optimizing JavaScript performance through code splitting and lazy loading.
Skills you'll gain
Add these to your LinkedIn profile and resume the day you finish.
Who should take this Advanced JavaScript Syntax and Features course?
And exactly what you need before starting (spoiler: almost nothing).
This course is for
- Frontend developers looking to upgrade their skills with modern JavaScript syntax.
- Computer science students preparing for technical interviews in India.
- Self-taught coders who want to write cleaner, more efficient web applications.
- Backend developers transitioning to full-stack roles using Node.js.
Prerequisites
- A basic understanding of JavaScript fundamentals is required for this course.
- Familiarity with HTML and CSS will help you grasp DOM manipulation concepts.
- A computer with a web browser and code editor installed.
How learning works on LearnTube
The structure of a bootcamp, the price of free.
AI curates your path
Our AI picks the top 1% of video content for each topic and arranges it into a structured, goal-based curriculum. No more tutorial roulette.
Learn, then get quizzed
After every lesson, your AI tutor asks you a question and gives personalised feedback on your answer, so gaps get fixed immediately.
Finish with proof
Complete the course, build the capstone project, and claim a certificate recognised by 900+ hiring partners.
A complete Advanced JavaScript Syntax and Features course: free, structured and job-focused
In about 1 hour of total learning time, this advanced JavaScript course delivers 81 bite-sized video lessons to upgrade your coding skills. You'll start right away with arrow functions before moving into the Introduction to Advanced JavaScript Syntax. The curriculum covers essential modern JavaScript concepts like Promises and Async/Await, ES6 Modules, and Advanced Array Methods. You'll also explore Object-Oriented Programming in JavaScript and Functional Programming Concepts to write more efficient, maintainable code.
LearnTube makes mastering these topics simple and interactive. You watch curated YouTube videos, and our AI tutor tests your knowledge with a quick quiz after every single lesson. This active learning approach ensures you actually understand Error Handling and Debugging, Advanced JavaScript Patterns, and Asynchronous Programming Patterns. We also cover practical skills like Browser APIs and DOM Manipulation, Testing and Debugging JavaScript Applications, and Performance Optimization in JavaScript.
Learning on the platform is completely free. You can access all 12 modules and study at your own pace. If you want to show off your new skills to the 900+ hiring partners in our network, an optional paid certificate is available upon completion. This modern JavaScript tutorial gives you the exact tools you need to build faster, more reliable web applications.
Jobs you can target after learning Advanced JavaScript Syntax and Features
Advanced JavaScript Syntax and Features is a gateway skill for some of the fastest-growing roles in tech.
Builds the interactive, user-facing parts of websites and web applications.
Handles both client-side and server-side programming for complete web solutions.
Specializes in writing complex scripts and optimizing web performance.
Typical entry-level salary ranges in India as of September 2026. Actual compensation varies by city, company and experience.
Earn a Advanced JavaScript Syntax and Features certificate employers recognise
Finish the course and claim a certificate you can share anywhere.
- Learn 100% free: every lesson, quiz and the AI tutor cost nothing
- Claim your certificate when you complete the course (an optional paid add-on)
- Recognised by 900+ hiring partners across India
- One click to share on LinkedIn and add to your resume
Why learners choose LearnTube
Real reviews from Google. You learn free, you get assessed free, and you pay only if you want the certificate.
Though I have 11 years of experience as an HRBP, the course helped me refresh my knowledge and gave me insights into new trends in the market. The modules were clear and easy to understand, and the quizzes were well designed. I have added the certificate to my LinkedIn profile.
I had a lot of doubts while learning, but the AI chatbot answered them in detail with simple summaries. The videos on the platform saved me a lot of time as I didn't have to search YouTube and watch random content.
Just earned my certificate in HR Management from LearnTube.ai! The platform is user-friendly and the assessment was a great way to validate my knowledge. Feeling proud of this accomplishment!
I enrolled in a LearnTube personalized course to get into a Data Analytics role. It helped me learn SQL in depth and gave me hands-on experience with Power BI. I attached the LearnTube certificate to my CV, it added credibility to my profile, and I'm currently in the interview process.
The interface is user-friendly and intuitive, making it easy to navigate the course. I encountered no errors during my time using the platform, which was a refreshing change from other online learning platforms.
Just cleared the Business Analyst assessment and got certified! Loved how the course simplifies big concepts like data-driven decision making into short, practical lessons. The automated quizzes kept me on track the whole time. Perfect boost for my resume!
The certificate gave me a real edge during my B.Tech. By the time I graduated, I had skills that set me apart from my peers, and the certification opened up more job opportunities. It gave me the confidence to stand out during interviews.
I manage many software projects as a General Manager and was looking for a good certification program to stay competitive. After researching many programs, I chose LearnTube and it was much better than I expected. The material is well-organized and practical, and what I liked most is the lifetime access.
Frequently asked questions
Everything learners ask before starting this Advanced JavaScript Syntax and Features course.
How long does it take to complete this advanced JavaScript course?
It takes about 1 hour to finish all 12 modules. The material is broken down into 81 short video lessons, so you can easily fit the learning into your daily schedule.
What can I build after learning modern JavaScript features?
You will be able to build dynamic, high-performance web applications. Mastering ES6 modules and async/await allows you to fetch data smoothly and structure complex projects much like a senior developer would.
Is advanced JavaScript still in demand for web development?
Yes, it remains highly requested by employers. Almost all modern web frameworks like React, Angular, and Vue rely heavily on advanced JavaScript syntax, making these skills essential for frontend roles.
Do I have to pay to learn advanced JavaScript here?
No, the entire learning experience is completely free. You can watch all 81 video lessons and take the AI-tutor quizzes at no cost. An optional paid certificate is available if you want one.
Are there any fixed schedules for this JS training?
No, the course is entirely self-paced. You can study whenever you have free time, making it easy to balance with a full-time job or university classes.
Will I learn about promises and asynchronous programming?
Yes, the curriculum includes dedicated modules on Promises, Async/Await, and Asynchronous Programming Patterns. You will learn exactly how to handle background API requests without freezing the main browser user interface.
What is the very first topic covered in the course?
The first lesson focuses on Arrow Functions. From there, you move into the Introduction to Advanced JavaScript Syntax, setting a strong foundation for the rest of the 12 modules.
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