Course: Advanced JavaScript

[ajay-dhangar]

Discussed in https://github.com/orgs/codeharborhub/discussions/4940

^{Originally posted by ajay-dhangar January 29, 2026}
Welcome to the CodeHarborHub Advanced JavaScript course! This course is designed for developers who have a basic understanding of JavaScript and want to take their skills to the next level. Through a series of hands-on challenges, you'll explore advanced concepts and techniques that will help you become a more proficient JavaScript developer.

Prerequisites: Basic knowledge of JavaScript, including variables, data types, functions, and control flow.

About

Hey there!

I'm Ajay Dhangar, a passionate web developer and educator behind CodeHarborHub. With years of experience in JavaScript and web development, I've designed this Advanced JavaScript course to help you deepen your understanding of the language through practical challenges.

This Advanced JavaScript course is meticulously crafted to help you master complex JavaScript concepts through practical, hands-on challenges. Whether you're looking to enhance your coding skills for professional growth or personal projects, this course provides the tools and knowledge you need to excel in JavaScript development.

Course Features:

• Comprehensive Coverage: Dive deep into advanced JavaScript topics, including asynchronous programming, advanced functions, object-oriented programming, and more.
• Hands-On Challenges: Each module includes practical challenges that reinforce learning and help you apply concepts in real-world scenarios.
• Expert Guidance: Benefit from my expertise as a seasoned developer and educator, with clear explanations and insights throughout the course.
• Flexible Learning: Progress at your own pace with structured modules that fit your schedule.

I'm excited to guide you on your journey to becoming an advanced JavaScript developer. Let's dive in and unlock the full potential of JavaScript together!

TOC (Table Of Content)

advanced-javascript
│
├── advanced-foundations
│   ├── introduction
│   ├── ternary-operator
│   ├── ternary-operator-complex
│   ├── ternary-operator-challenge
│   ├── switch-statements
│   ├── switch-statement-challenge
│   ├── object-destructuring
│   ├── object-destructuring-challenge
│   ├── settimeout
│   ├── settimeout-params
│   ├── settimeout-challenge
│   ├── setinterval
│   ├── setinterval-challenge
│   ├── event-loop
│   ├── event-loop-challenge
│   ├── import-export-named
│   ├── import-export-default
│   ├── import-export-challenge
│   ├── date-constructor
│   ├── date-challenge
│   ├── error-constructor
│   ├── error-challenge
│   ├── pre-increment
│   ├── pre-increment-challenge
│   ├── numeric-separators-bigint
│   ├── numeric-separators-bigint-challenge
│   ├── hoisting
│   ├── hoisting-challenge
│   ├── super-challenge-stock-price-checker
│   └── super-challenge-stock-price-checker-solution
│
├── methods-loops
│   ├── introduction
│   ├── for-of-loop
│   ├── for-of-loop-challenge
│   ├── for-in-loop
│   ├── for-in-loop-challenge
│   ├── foreach-method
│   ├── foreach-method-challenge
│   ├── map-method
│   ├── map-method-challenge
│   ├── filter-method
│   ├── filter-method-challenge
│   ├── reduce-method
│   ├── reduce-method-challenge
│   ├── includes-method
│   ├── includes-method-challenge
│   ├── join-method
│   ├── join-method-challenge
│   ├── map-vs-foreach
│   ├── filter-with-objects
│   ├── for-loop-break-continue
│   ├── various-array-methods
│   ├── string-replace-replaceall
│   ├── regex-flags-constructors
│   ├── super-challenge-movie-search
│   └── super-challenge-movie-search-solution
│
├── function-expressions-parameters
│   ├── introduction
│   ├── function-expressions
│   ├── function-expressions-challenge
│   ├── arrow-functions
│   ├── arrow-functions-challenge
│   ├── inline-arrow-functions
│   ├── inline-arrow-functions-challenge
│   ├── default-parameters
│   ├── default-parameters-challenge
│   ├── rest-parameters
│   ├── rest-parameters-challenge
│   ├── callback-functions
│   ├── callback-functions-challenge
│   ├── higher-order-functions
│   ├── higher-order-functions-challenge
│   ├── super-challenge-real-estate
│   └── super-challenge-real-estate-solution
│
├── asynchronous-javascript-apis
│   ├── introduction
│   ├── what-is-an-api
│   ├── client-server
│   ├── requests-responses
│   ├── json-review
│   ├── urls-endpoints
│   ├── fetching-with-then
│   ├── fetching-with-then-challenge
│   ├── fetching-with-async-await
│   ├── fetching-with-async-await-challenge
│   ├── error-handling-try-catch
│   ├── error-handling-challenge
│   ├── promises
│   ├── promises-challenge
│   ├── handling-rejected-promises
│   ├── handling-rejected-promises-challenge
│   ├── response-ok
│   ├── response-ok-challenge
│   ├── taking-apis-to-the-next-level
│   ├── api-request-body-headers
│   ├── promise-constructor
│   ├── working-with-images-asynchronously
│   ├── callback-hell
│   ├── using-promises-to-escape-callback-hell
│   ├── promise-all
│   ├── super-challenge-weather-app
│   └── super-challenge-weather-app-solution
│
├── logical-operators-coalescing
│   ├── introduction
│   ├── short-circuiting-or
│   ├── short-circuiting-or-challenge
│   ├── short-circuiting-and
│   ├── short-circuiting-and-challenge
│   ├── nullish-coalescing-operator
│   ├── nullish-coalescing-operator-challenge
│   ├── chaining-logical-operators
│   ├── chaining-logical-operators-challenge
│   ├── super-challenge-user-profile
│   └── super-challenge-user-profile-solution
│
├── working-with-objects
│   ├── introduction
│   ├── objects-inbuilt-methods
│   ├── objects-inbuilt-methods-challenge
│   ├── object-methods-challenge-1
│   ├── object-methods-challenge-2
│   ├── object-hasown-hasownproperty
│   ├── object-hasown-hasownproperty-challenge
│   ├── object-entries-fromentries
│   ├── object-entries-fromentries-challenge
│   ├── object-freeze-object-seal
│   ├── object-freeze-object-seal-challenge
│   ├── assignment-by-value-reference
│   ├── assignment-by-value-reference-challenge
│   ├── spread-operator
│   ├── spread-operator-challenge
│   ├── object-assign
│   ├── object-assign-challenge
│   ├── structuredclone
│   ├── structuredclone-challenge
│   ├── objects-with-methods-this
│   ├── objects-with-methods-this-challenge
│   ├── binding-this
│   ├── binding-this-challenge
│   ├── super-challenge-inventory-management
│   └── super-challenge-inventory-management-solution
│
├── creating-custom-objects
│   ├── introduction
│   ├── constructor-functions
│   ├── constructor-functions-challenge
│   ├── factory-functions
│   ├── factory-functions-challenge
│   ├── constructor-function-to-classes
│   ├── constructor-function-to-classes-challenge
│   ├── apply-call
│   ├── apply-call-challenge
│   ├── bind-method
│   ├── bind-method-challenge
│   ├── inheritance-explainer
│   ├── inheritance-challenge
│   ├── inheritance-constructor-functions
│   ├── inheritance-constructor-functions-challenge
│   ├── polymorphism-constructor-functions
│   ├── polymorphism-constructor-functions-challenge
│   ├── inheritance-classes
│   ├── inheritance-classes-challenge
│   ├── static-methods-properties
│   ├── static-methods-properties-challenge
│   ├── private-fields
│   ├── private-fields-challenge
│   ├── getter-setter
│   ├── getter-setter-challenge
│   ├── super-challenge-bank-account-system
│   └── super-challenge-bank-account-system-solution
│
├── collections-symbols
│   ├── introduction
│   ├── symbols
│   ├── symbols-challenge
│   ├── map-object
│   ├── map-object-challenge
│   ├── set-object
│   ├── set-object-challenge
│   ├── weakmap-weakset
│   ├── weakmap-weakset-challenge
│   ├── super-challenge-library-system
│   └── super-challenge-library-system-solution
│
└── advanced-function-patterns-generators
    ├── introduction
    ├── iife
    ├── iife-challenge
    ├── closures
    ├── closures-challenge
    ├── currying
    ├── currying-challenge
    ├── generators
    ├── generators-challenge
    ├── recursion-basic-example
    ├── recursion-challenge
    ├── recursion-sum-all-numbers
    ├── recursion-sum-all-numbers-challenge
    ├── recursion-unwinding
    ├── recursion-unwinding-challenge
    ├── throttling-debouncing
    └── throttling-debouncing-challenge

FAQs

Who is this course for?

This course is designed for developers who have a basic understanding of JavaScript and want to deepen their knowledge of advanced concepts and techniques.

What prerequisites are needed?

A basic knowledge of JavaScript, including variables, data types, functions, and control flow is recommended before starting this course.

How is the course structured?

The course is divided into several modules, each focusing on specific advanced JavaScript topics. Each module includes lessons and hands-on challenges to reinforce learning.

Will there be practical challenges?

Yes! Each module includes practical challenges designed to help you apply the concepts you've learned in real-world scenarios.

Can I learn at my own pace?

Absolutely! The course is designed to be flexible, allowing you to progress at your own pace and revisit lessons as needed.

[github-actions]

Hi @ajay-dhangar! 👋 Thank you for opening your first issue on CodeHarborHub. We're excited to hear your thoughts and help you out. You've raised a great topic! Please provide as much detail as you can so we can assist you effectively. Welcome aboard!

[github-actions]

Hi @ajay-dhangar! Thanks for opening this issue. We appreciate your contribution to this open-source project. Your input is valuable and we aim to respond or assign your issue as soon as possible. Thanks again!