Great Learning Introduces New Course to Boost Advanced JavaScript Development Skills

As web applications become more complex in 2026, the demand for developers who can handle more than just basic scripts has reached an all-time high. While many can write simple code, mastering the language's complex parts, such as Identity and access management, web logic, asynchronous data flows, and memory management are highly demanded skill by companies. 

Recognizing this demand, Great Learning has launched its new Advanced JavaScript Development course to help professionals build scalable, high-performance applications in today's security-first world.

If you are looking to transition from a basic coder to a software developer, understanding these concepts is the most effective way to future-proof your career.

The Growing Need for Professional JavaScript Expertise

The role of JavaScript has evolved far beyond basic page interactions, with modern organizations requiring developers who can build complex, data-intensive applications without compromising performance.

As user expectations shift toward near-instant responsiveness, strong command over core JavaScript, often referred to as Vanilla JS, has become a premium skill for reducing bundle sizes and optimizing execution.

This growing demand is reflected in average annual salaries of around $90,941 for experienced programmers. Today, professional JavaScript expertise goes beyond syntax and frameworks; it requires a clear understanding of how the JavaScript engine works, including memory management and state control.

This course is designed to bridge that gap, helping learners move from foundational coding to a deeper, practical understanding of JavaScript’s internal mechanics for building efficient, scalable applications.

How does the Advanced JavaScript Development pro course help?

This 4.5-hour program focuses on ES6+ features and real-world application building. The JavaScript Training course helps you build interactive web applications while mastering core and advanced programming concepts. 

You will learn ES6 features, functions, prototypes, classes, asynchronous programming, API handling, and web storage through hands-on projects like a GeoShapes Mini-Engine and a Media Explorer app. 

By the end of the course, you will have practical experience creating dynamic applications, solving real-world coding problems, and building web apps with confidence.

Core Learning Modules

• Modern ES6+ Features: Build a strong foundation in modern JavaScript by learning ES6 syntax and features, including let and const keywords, template strings, default parameters, and advanced usage of Rest and Spread operators. You will also work extensively with array and object destructuring, including real-world patterns that combine rest with destructuring.

• JavaScript Functions and Execution Context: Understand how JavaScript works behind the scenes by exploring functions as first-class citizens, function and variable hoisting, and execution context. Learn how the this keyword behaves in different scenarios and gain hands-on experience with call, apply, and bind to control function contexts effectively.

• Built-in Functions and Core Libraries: Leverage JavaScript’s powerful built-in capabilities by working with Math, Number, String, and Date-Time functions. You will learn tasks such as generating random values, parsing numbers, manipulating strings, and creating, reading, and updating date objects using getters and setters.

• Object-Oriented JavaScript with Prototypes and Classes: Develop reusable and maintainable code by understanding object prototypes, prototype chains, constructor functions, and class-based inheritance. Learn how to define and extend classes using ES6 syntax to model real-world objects and behaviors. For more understanding, refer to this guide on Object-Oriented Programming in JavaScript.

• Iteration, Collections, and Array Methods: Master common iteration techniques and data structures in JavaScript, including arrays, iterables, maps, and sets. Apply functional programming methods such as forEach, filter, and map to process data efficiently and write cleaner, more expressive code.

• Asynchronous Programming and API Handling: Learn how to handle asynchronous operations using callbacks, promises, and async/await. Work with XMLHttpRequest and the Fetch API to communicate with servers, fetch data from APIs, and manage asynchronous workflows without callback complexity.

• Error Handling and Debugging: Improve application stability by implementing proper error handling with try-catch blocks and custom error classes. Learn how to identify, handle, and recover from runtime issues in real-world JavaScript applications.

• APIs, Browser Storage, and Data Management: Understand client-server communication, including GET and POST requests, and work in strict mode for cleaner code. Learn how to store, retrieve, and manage data using local storage and session storage, along with essential array manipulation methods like sort, push, pop, shift, slice, and splice.

This self-paced, industry-aligned JavaScript online course is ideal for developers and IT professionals looking to level up. You will work through interactive modules that turn theoretical concepts into practical skills.

For a deep dive into the language’s core structure, check out this Comprehensive JavaScript Tutorial for Beginners to Advanced.

Why Study This Course with Great Learning?

• Industry-Focused Curriculum: Designed by experts to cover the most demanded skills recruiters look for in 2026.

• Guided Projects: Learners will address real-world challenges through structured, step-by-step guidance.
  
  - GeoShapes Mini-Engine: Develop a foundational geometry toolkit from the ground up using ES6 features and built-in mathematical functions.
  
  - Media Explorer: Design and implement a search and filtering application by integrating real-world APIs with robust error-handling mechanisms.

• Expanded Learning Access – Subscribers unlock 40+ advanced programs at just ₹999/month, along with 700+ hands-on practice tasks and guided projects designed to build cross-functional expertise.

• GL Coach Support – Learn with an AI-powered assistant that offers step-by-step explanations, real-world examples, curated learning resources, AI-based mock interviews, and an intelligent resume builder with personalized feedback to improve job readiness.

• Industry-Recognized Credential – Receive a Great Learning Certificate of Completion that validates practical skills and strengthens your professional profile across platforms.

• Learn on Your Schedule – Enjoy a flexible learning format that blends self-paced lessons, recorded sessions, and live interactive classes, making it easy to balance learning with work or studies.

• Trusted Worldwide – Millions of learners rely on Great Learning for practical, career-driven technology education that delivers real outcomes.

In short, this is more than just a tutorial; it is a comprehensive learning experience designed to help you confidently build and deploy real-world web applications. Take the next step in your coding journey by enrolling in this JavaScript course with Great Learning today.