Level 1: Beginner

1. Introduction to JavaScript
   • What is JavaScript?
   • Role of JavaScript in web development.
2. Setting Up
   • Setting up a development environment (text editor, browser).
   • Writing your first JavaScript code.
3. Basic JavaScript Syntax
   • Variables and data types.
   • Operators and expressions.
   • Basic input and output.
4. Control Flow
   • Conditional statements (if, else if, else).
   • Loops (for, while).
   • Logical operators.
5. Functions
   • Declaring and invoking functions.
   • Parameters and return values.
   • Scope and closures.
6. Arrays and Objects
   • Creating and manipulating arrays.
   • Working with objects and properties.
7. DOM Manipulation
   • Introduction to the Document Object Model.
   • Selecting and modifying HTML elements with JavaScript.
8. Events and Event Handling
   • Adding event listeners.
   • Handling user interactions.
9. Error Handling
   • Introduction to error handling with try-catch.
   • Common JavaScript errors.
10. Introduction to ES6
    • Let, const, and arrow functions.
    • Template literals and destructuring.

Level 2: Intermediate 11. Asynchronous JavaScript

• Introduction to asynchronous programming.
• Callbacks and Promises.
• Async/await.

1. AJAX and Fetch
   • Making asynchronous requests to a server.
   • Working with APIs.
   • JSON and data retrieval.
2. ES6+ Features
   • Spread/rest operators, classes, and modules.
   • Maps, Sets, and iterators.
3. Debugging
   • Debugging tools and techniques.
   • Identifying and fixing common bugs.
4. Local Storage and Cookies
   • Storing data on the client-side.
   • Cookie handling.
5. ESLint and Code Quality
   • Setting up ESLint for code quality.
   • Best practices.

Level 3: Advanced 17. Advanced DOM Manipulation

• Event delegation.
• Creating and deleting elements.
• Animation with JavaScript.

1. Design Patterns
   • Singleton, Factory, Module, and Observer patterns.
   • Implementing and using design patterns in JavaScript.
2. Web Performance Optimization
   • Reducing page load times.
   • Caching and lazy loading.