Lessons
JavaScript · Medium
JavaScript · Medium. Ten lessons. Open-book quizzes. Lesson 1 free.
10 lessons · The Host · Lesson 1 free
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Lesson 1 · On the house
Event loop sketch
Call stack, tasks, and microtasks.
Lesson 2
Fetch basics
HTTP from JS with fetch.
Lesson 3
Map and Set
Keyed collections beyond plain objects.
Lesson 4
Iterators and for...of
next(), done, and iterables.
Lesson 5
Prototype chain
Where property lookup walks.
Lesson 6
Modules in depth
Live bindings and circular caution.
Lesson 7
Typed arrays sketch
Bytes in ArrayBuffer views.
Lesson 8
WeakMap / WeakRef idea
Ephemeral keys and GC cooperation.
Lesson 9
Testing a pure function
Assert expected outputs.
Lesson 10
Medium capstone
Compose fetch-shaped async with care.
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