AI App Builder
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JavaScript

The product-builder track for turning models, APIs, and lessons into real user experiences.

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Modules
25
Lessons
381
Labs
0
Hours
75
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Guide

Build useful web interfaces, dashboards, and app flows around AI and learning products.

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Read

Start with the plain-English model before syntax or formulas.

Run

Open examples and labs when the concept needs motion.

Check

Use practice and progress to close the loop before moving on.

Ship

Turn modules into projects and certificates you can show.

Course Path

Follow a guided syllabus.

Start from fundamentals, revisit any module, and keep a clear path toward projects and certificates.

  1. 01

    Module 01 JavaScript Fundamentals

    7 lessons1 hr

    Finish this module able to use Module 01 JavaScript Fundamentals as part of real JavaScript work.

    Open module
  2. 02

    Module 02 Variables And Data Types

    9 lessons2 hr

    Finish this module able to use Module 02 Variables And Data Types as part of real JavaScript work.

    Open module
  3. 03

    Module 03 Operators

    30 lessons5 hr

    Finish this module able to use Module 03 Operators as part of real JavaScript work.

    Open module
  4. 04

    Module 04 Control Flow

    21 lessons4 hr

    Finish this module able to use Module 04 Control Flow as part of real JavaScript work.

    Open module
  5. 05

    Module 05 Functions

    28 lessons5 hr

    Finish this module able to use Module 05 Functions as part of real JavaScript work.

    Open module
  6. 06

    Module 06 Arrays

    12 lessons2 hr

    Finish this module able to use Module 06 Arrays as part of real JavaScript work.

    Open module
  7. 07

    Module 07 Strings

    6 lessons1 hr

    Finish this module able to use Module 07 Strings as part of real JavaScript work.

    Open module
  8. 08

    Module 08 Numbers Math

    9 lessons2 hr

    Finish this module able to use Module 08 Numbers Math as part of real JavaScript work.

    Open module
  9. 09

    Module 09 Date Time

    10 lessons2 hr

    Finish this module able to use Module 09 Date Time as part of real JavaScript work.

    Open module
  10. 10

    Module 10 Objects

    22 lessons5 hr

    Finish this module able to use Module 10 Objects as part of real JavaScript work.

    Open module
  11. 11

    Module 11 Classes

    16 lessons4 hr

    Finish this module able to use Module 11 Classes as part of real JavaScript work.

    Open module
  12. 12

    Module 12 Execution Context

    16 lessons3 hr

    Finish this module able to use Module 12 Execution Context as part of real JavaScript work.

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  13. 13

    Module 13 Modern JavaScript

    19 lessons3 hr

    Finish this module able to use Module 13 Modern JavaScript as part of real JavaScript work.

    Open module
  14. 14

    Module 14 ES Modules

    16 lessons4 hr

    Finish this module able to use Module 14 ES Modules as part of real JavaScript work.

    Open module
  15. 15

    Module 15 Asynchronous JavaScript

    15 lessons3 hr

    Finish this module able to use Module 15 Asynchronous JavaScript as part of real JavaScript work.

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  16. 16

    Module 16 Advanced Async

    22 lessons4 hr

    Finish this module able to use Module 16 Advanced Async as part of real JavaScript work.

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  17. 17

    Module 17 DOM Manipulation

    15 lessons4 hr

    Finish this module able to use Module 17 DOM Manipulation as part of real JavaScript work.

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  18. 18

    Module 18 Browser APIs And Storage

    21 lessons5 hr

    Finish this module able to use Module 18 Browser APIs And Storage as part of real JavaScript work.

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  19. 19

    Module 19 Advanced DOM Browser APIs

    25 lessons5 hr

    Finish this module able to use Module 19 Advanced DOM Browser APIs as part of real JavaScript work.

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  20. 20

    Module 20 Testing Debugging

    16 lessons4 hr

    Finish this module able to use Module 20 Testing Debugging as part of real JavaScript work.

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  21. 21

    Module 21 Security Best Practices

    7 lessons2 hr

    Finish this module able to use Module 21 Security Best Practices as part of real JavaScript work.

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  22. 22

    Module 22 Design Patterns

    4 lessons47 min

    Finish this module able to use Module 22 Design Patterns as part of real JavaScript work.

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  23. 23

    Module 23 Performance Optimization

    7 lessons1 hr

    Finish this module able to use Module 23 Performance Optimization as part of real JavaScript work.

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  24. 24

    Module 24 JavaScript Engine Internals

    16 lessons3 hr

    Finish this module able to use Module 24 JavaScript Engine Internals as part of real JavaScript work.

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  25. 25

    Module 25 Web Components

    12 lessons2 hr

    Finish this module able to use Module 25 Web Components as part of real JavaScript work.

    Open module
Course Guide

Instructor notes and source guide

4 min read18 headings

JavaScript Complete Learning Path

📚 From Beginner to Advanced | 25 Modules | 240+ Files

Welcome to your comprehensive JavaScript learning journey! This repository is structured to take you from absolute beginner to advanced JavaScript developer with hands-on practice.

🎯 How to Use This Repository

For each topic, you'll find 3 files:

  1. README.md - Complete theory and explanations. Read this first!
  2. examples.js - Working code examples demonstrating concepts
  3. exercises.js - Practice problems to test your understanding

Learning Flow:

README.md (Learn) → examples.js (See) → exercises.js (Practice)

📖 Curriculum Overview

┌─────────────────────────────────────────────────────────────────────────────────┐
│                         JavaScript Learning Path                                 │
│                        25 Modules • 240+ Files • 100K+ Lines                    │
├─────────────────────────────────────────────────────────────────────────────────┤
│                                                                                  │
│   FUNDAMENTALS (1-5)        DATA TYPES (6-9)         OOP (10-11)                │
│   ┌─────────────────┐       ┌─────────────────┐      ┌─────────────────┐        │
│   │ 1. JS Basics    │       │ 6. Arrays/Maps  │      │ 10. Objects     │        │
│   │ 2. Variables    │  ───► │ 7. Strings/RegEx│ ───► │ 11. Classes     │        │
│   │ 3. Operators    │       │ 8. Numbers/Math │      └─────────────────┘        │
│   │ 4. Control Flow │       │ 9. Date/Time/i18n│                                │
│   │ 5. Functions    │       └─────────────────┘                                 │
│   └─────────────────┘                                                            │
│           │                                                                      │
│           ▼                                                                      │
│   ADVANCED CORE (12-16)     BROWSER (17-19)          PROFESSIONAL (20-25)       │
│   ┌─────────────────┐       ┌─────────────────┐      ┌─────────────────┐        │
│   │ 12. Exec Context│       │ 17. DOM         │      │ 20. Testing     │        │
│   │ 13. Modern JS   │  ───► │ 18. Browser APIs│ ───► │ 21. Security    │        │
│   │ 14. ES Modules  │       │ 19. Advanced DOM│      │ 22. Patterns    │        │
│   │ 15. Async JS    │       └─────────────────┘      │ 23. Performance │        │
│   │ 16. Adv Async   │                                │ 24. Internals   │        │
│   └─────────────────┘                                │ 25. Web Comps   │        │
│                                                      └─────────────────┘        │
│                                                                                  │
└─────────────────────────────────────────────────────────────────────────────────┘

📘 Module Details

PHASE 1: FUNDAMENTALS (Modules 1-5)

ModuleTopicSections
Module 01JavaScript Fundamentals1.1 Introduction, 1.2 Basic Syntax
Module 02Variables & Data Types2.1 Variables, 2.2 Data Types, 2.3 Type Mechanics
Module 03Operators3.1-3.10 All operators including spread, rest, nullish coalescing
Module 04Control Flow4.1 If-Else, 4.2 Switch, 4.3-4.5 Loops, 4.6 Try-Catch
Module 05Functions5.1-5.9 Declarations, expressions, arrow, closures, recursion

PHASE 2: CORE DATA TYPES (Modules 6-9)

ModuleTopicSections
Module 06Arrays6.1 Fundamentals, 6.2 Key Methods, 6.3 Maps/Sets, 6.4 TypedArrays
Module 07Strings7.1 String Fundamentals, 7.2 Regular Expressions
Module 08Numbers & Math8.1 Number Fundamentals, 8.2 Math Object, 8.3 BigInt
Module 09Date & Time9.1 Fundamentals, 9.2 Formatting/Calculations, 9.3 Intl

PHASE 3: OBJECT-ORIENTED PROGRAMMING (Modules 10-11)

ModuleTopicSections
Module 10Objects10.1-10.7 Basics, methods, descriptors, prototypes, patterns, fromEntries
Module 11Classes11.1-11.5 Basics, inheritance, static, private, patterns

PHASE 4: ADVANCED CORE CONCEPTS (Modules 12-16)

ModuleTopicSections
Module 12Execution Context12.1-12.5 Context, call stack, hoisting, event loop, memory management
Module 13Modern JavaScript13.1-13.6 Destructuring, template literals, symbols, iterators, generators, reflect
Module 14ES Modules14.1-14.5 Module systems, ESM, CommonJS, bundlers, patterns
Module 15Asynchronous JavaScript15.1-15.5 Callbacks, promises, async/await, error handling, patterns
Module 16Advanced Async16.1-16.7 Promise combinators, error handling, patterns, workers, streams

PHASE 5: BROWSER & DOM (Modules 17-19)

ModuleTopicSections
Module 17DOM Manipulation17.1-17.5 DOM basics, modifying, events, delegation, forms
Module 18Browser APIs & Storage18.1-18.7 localStorage, JSON, Fetch API, URL/History, timers, Geolocation, Clipboard
Module 19Advanced DOM & Browser19.1-19.8 Traversal, Mutation/Intersection/Resize/Performance observers, animations

PHASE 6: PROFESSIONAL DEVELOPMENT (Modules 20-25)

ModuleTopicSections
Module 20Testing & Debugging20.1-20.5 Unit testing, E2E, mocking, debugging, code quality
Module 21Security Best Practices21.1-21.2 Security fundamentals, secure coding
Module 22Design Patterns22.1 All patterns: creational, structural, behavioral, functional
Module 23Performance Optimization23.1-23.2 Metrics, JS optimization, rendering, network, best practices
Module 24JavaScript Engine Internals24.1-24.5 Engine architecture, hidden classes, GC, modules, optimization
Module 25Web Components25.1-25.4 Custom Elements, Shadow DOM, HTML Templates, Component Patterns

🗂 Repository Structure

javascript-learning/
├── README.md                              ← You are here
├── Module-01-JavaScript-Fundamentals/
│   ├── 1.1-Introduction/
│   └── 1.2-Basic-Syntax/
├── Module-02-Variables-and-Data-Types/
│   ├── 2.1-Variables/
│   ├── 2.2-Data-Types/
│   └── 2.3-Type-Mechanics/
├── Module-03-Operators/
│   ├── 3.1-Arithmetic-Operators/
│   ├── 3.2-Comparison-Operators/
│   ├── 3.3-Logical-Operators/
│   ├── 3.4-Assignment-Operators/
│   ├── 3.5-Bitwise-Operators/
│   ├── 3.6-Ternary-Operator/
│   ├── 3.7-Spread-Operator/
│   ├── 3.8-Rest-Operator/
│   ├── 3.9-Nullish-Coalescing/
│   └── 3.10-Optional-Chaining/
├── Module-04-Control-Flow/
│   ├── 4.1-If-Else/
│   ├── 4.2-Switch/
│   ├── 4.3-For-Loops/
│   ├── 4.4-While-Loops/
│   ├── 4.5-ForOf-ForIn/
│   ├── 4.6-Try-Catch/
│   └── 4.7-Error-Types-Custom-Errors/
├── Module-05-Functions/
│   ├── 5.1-Function-Declarations/
│   ├── 5.2-Function-Expressions/
│   ├── 5.3-Arrow-Functions/
│   ├── 5.4-Parameters-Arguments/
│   ├── 5.5-Call-Apply-Bind/
│   ├── 5.6-Scope-Closures/
│   ├── 5.7-Higher-Order-Functions/
│   ├── 5.8-Recursion/
│   └── 5.9-Pure-Functions-Side-Effects/
├── Module-06-Arrays/
│   ├── 6.1-Array-Fundamentals/
│   ├── 6.2-Key-Array-Methods/
│   ├── 6.3-Maps-and-Sets/
│   └── 6.4-TypedArrays-Binary-Data/
├── Module-07-Strings/
│   ├── 7.1-String-Fundamentals/
│   └── 7.2-Regular-Expressions/
├── Module-08-Numbers-Math/
│   ├── 8.1-Number-Fundamentals/
│   ├── 8.2-Math-Object/
│   └── 8.3-BigInt/
├── Module-09-Date-Time/
│   ├── 9.1-Date-Fundamentals/
│   ├── 9.2-Date-Formatting-Calculations/
│   └── 9.3-Internationalization-Intl/
├── Module-10-Objects/
│   ├── 10.1-Object-Basics/
│   ├── 10.2-Object-Methods/
│   ├── 10.3-Property-Descriptors/
│   ├── 10.4-Object-Static-Methods/
│   ├── 10.5-Prototypes/
│   ├── 10.6-Object-Patterns/
│   └── 10.7-Object-fromEntries-Advanced/
├── Module-11-Classes/
│   ├── 11.1-Class-Basics/
│   ├── 11.2-Class-Inheritance/
│   ├── 11.3-Static-Members/
│   ├── 11.4-Private-Fields-Methods/
│   └── 11.5-Class-Patterns/
├── Module-12-Execution-Context/
│   ├── 12.1-Execution-Context/
│   ├── 12.2-Call-Stack/
│   ├── 12.3-Hoisting/
│   ├── 12.4-Event-Loop/
│   └── 12.5-Memory-Management/
├── Module-13-Modern-JavaScript/
│   ├── 13.1-Destructuring/
│   ├── 13.2-Template-Literals/
│   ├── 13.3-Symbols/
│   ├── 13.4-Iterators/
│   ├── 13.5-Generators/
│   └── 13.6-Reflect-API/
├── Module-14-ES-Modules/
│   ├── 14.1-Module-Systems-Overview/
│   ├── 14.2-ESM-Import-Export/
│   ├── 14.3-CommonJS/
│   ├── 14.4-Bundlers-Build-Tools/
│   └── 14.5-Module-Patterns/
├── Module-15-Asynchronous-JavaScript/
│   ├── 15.1-Callbacks/
│   ├── 15.2-Promises/
│   ├── 15.3-Async-Await/
│   ├── 15.4-Error-Handling/
│   └── 15.5-Async-Patterns/
├── Module-16-Advanced-Async/
│   ├── 16.1-Promise-Combinators/
│   ├── 16.2-Advanced-Error-Handling/
│   ├── 16.3-Async-Patterns/
│   ├── 16.4-Web-Workers/
│   ├── 16.5-Service-Workers/
│   ├── 16.6-Streams-API/
│   └── 16.7-Real-Time-Communication/
├── Module-17-DOM-Manipulation/
│   ├── 17.1-DOM-Basics/
│   ├── 17.2-Modifying-DOM/
│   ├── 17.3-Events/
│   ├── 17.4-Event-Delegation/
│   └── 17.5-Forms/
├── Module-18-Browser-APIs-and-Storage/
│   ├── 18.1-LocalStorage-SessionStorage/
│   ├── 18.2-JSON/
│   ├── 18.3-Fetch-API/
│   ├── 18.4-URL-History-API/
│   ├── 18.5-Timers/
│   ├── 18.6-Geolocation-API/
│   └── 18.7-Clipboard-API/
├── Module-19-Advanced-DOM-Browser-APIs/
│   ├── 19.1-DOM-Traversal/
│   ├── 19.2-MutationObserver/
│   ├── 19.3-IntersectionObserver/
│   ├── 19.4-ResizeObserver/
│   ├── 19.5-PerformanceObserver/
│   ├── 19.6-RequestAnimationFrame/
│   ├── 19.7-Web-Animations-API/
│   └── 19.8-Drag-and-Drop-API/
├── Module-20-Testing-Debugging/
│   ├── 20.1-Unit-Testing/
│   ├── 20.2-E2E-Testing/
│   ├── 20.3-Mocking/
│   ├── 20.4-Debugging/
│   └── 20.5-Code-Quality/
├── Module-21-Security-Best-Practices/
│   ├── 21.1-Security-Fundamentals/
│   └── 21.2-Secure-Coding/
├── Module-22-Design-Patterns/
│   └── 22.1-All-Patterns/
├── Module-23-Performance-Optimization/
│   ├── 23.1-Performance-Metrics/
│   └── 23.2-Optimization-Techniques/
├── Module-24-JavaScript-Engine-Internals/
│   ├── 24.1-Engine-Architecture/
│   ├── 24.2-Hidden-Classes/
│   ├── 24.3-Garbage-Collection/
│   ├── 24.4-Module-Internals/
│   └── 24.5-Optimization-Techniques/
└── Module-25-Web-Components/
    ├── 25.1-Custom-Elements/
    ├── 25.2-Shadow-DOM/
    ├── 25.3-HTML-Templates/
    └── 25.4-Component-Patterns/

🛠 Prerequisites

  • A modern web browser (Chrome, Firefox, Edge)
  • A code editor (VS Code recommended)
  • Basic computer literacy
  • Node.js (for Modules 14+)

🚀 Getting Started

  1. Start with Module 1 - JavaScript Fundamentals
  2. Open the README.md file in each topic folder
  3. Study the concepts thoroughly
  4. Check examples.js to see practical implementations
  5. Complete exercises.js to test your knowledge
  6. Move to the next topic once you're comfortable

💡 Tips for Success

  1. Don't skip topics - Each concept builds on previous ones
  2. Type the code yourself - Don't just copy-paste
  3. Experiment - Modify examples and see what happens
  4. Use DevTools - Practice in browser console
  5. Be patient - Some concepts take time to understand
  6. Build projects - Apply what you learn in real projects

📊 Learning Time Estimates

PhaseModulesEstimated Time
Fundamentals1-52-3 weeks
Data Types6-91-2 weeks
OOP10-111 week
Advanced Core12-162-3 weeks
Browser/DOM17-192 weeks
Professional20-253-4 weeks
Total25 Modules11-15 weeks

📞 Happy Learning!

Remember: The best way to learn programming is by doing. Good luck on your JavaScript journey!

📈 Curriculum Statistics

  • Total Modules: 25
  • Total Sections: 122
  • Total Files: 240+
  • Total Lines of Code: 100,000+
  • Examples per Topic: 15-30
  • Exercises per Topic: 10-20

Last Updated: 2024