Advanced Language Features in JavaScript

Upgrade from ES5-era JavaScript to modern (ES2015+) syntax. This course covers the everyday building blocks that make modern code concise and expressive: block-scoped variables, arrow functions, destructuring, spread/rest, optional chaining, nullish coalescing, and template literals (including tagged templates). By the end, you'll read and write idiomatic modern JavaScript fluently.

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.

Model domain entities with confidence using modern class features. This course explores the prototype model beneath classes, then layers on private fields, static members, getters/setters, inheritance with `super`, custom error subclasses, `instanceof`, and `WeakMap`-based privacy as an alternative. You'll learn when to choose each tool and how to keep class designs robust.

Master the protocols and async machinery powering modern JavaScript: Symbols, iterators, generators, lazy pipelines, Promises, `async`/`await`, and async iteration with `for await…of`. Write code that integrates naturally with language features.