Adopt the functional mindset that powers modern JavaScript codebases. This course teaches closures, higher-order functions, immutable updates, currying, function composition, memoization, and modern collections (`Map`/`Set`). You'll learn to build small, composable utilities that combine into clean data pipelines.
Overview
Syllabus
Closures and Private State
- Encapsulate the Counter
- Fix the Call Tracker
- Isolate Private Counter State
- Build Your Own Function Factory
Higher Order Functions
- From Loops to Pipelines
- Fix the Grouping Logic
- Build Flexible Sorting Tools
- Master the Data Pipeline
Immutability and Pure Functions
- Refactoring for Purity
- Fix the Mutating Array
- Safe Updates for Nested Data
- Building a Pure Todo Manager
Currying and Composition
- Curry Your Functions
- Fix the Execution Flow
- Build Your Functional Toolkit
- Build a Reusable Pricing Pipeline
Memoization Maps and Sets
- Modernize Your Private Cache
- Fix the Function Cache
- Streamline Your Data Collections
- Build Your Performance Toolbox
