Advanced JavaScript

This module is about the JavaScript patterns that power backend systems: transforming data with array methods, handling asynchronous operations with callbacks and Promises, consuming APIs, and modeling domains with classes.

Contents

Week	Topic	Preparation	Session Plan	Assignment
1.	Array Methods	Preparation	Session Plan (for mentors)	Assignment
2.	Callbacks & Delayed Execution	Preparation	Session Plan (for mentors)	Assignment
3.	Promises & async/await	Preparation	Session Plan (for mentors)	Assignment
4.	Classes & Object-Oriented Programming	Preparation	Session Plan (for mentors)	Assignment

Module Learning Goals

By the end of this module, you will be able to:

• Use array methods (forEach, map, filter, reduce) to transform, query, and aggregate data

• Chain array methods into data transformation pipelines

• Write concise arrow functions with implicit and explicit returns

• Pass functions as arguments and return functions from functions (higher-order functions)

• Use callbacks for synchronous and asynchronous operations, including error-first callbacks

• Explain the difference between synchronous and asynchronous code execution in JavaScript

• Consume and create Promises using .then(), .catch(), and new Promise()

• Use async/await with try/catch for clean asynchronous code

• Fetch data from APIs and run parallel requests with Promise.all()

• Declare classes with constructors, methods, and static methods

• Use inheritance with extends and super()