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Week 6 · 9–12 hours

Async JavaScript & APIs

Connect JavaScript to the real world

Coordinate delayed work, call HTTP APIs, and build resilient loading and error states.

Daily study plan

1

Sync vs async + Event loop

55 min

Start
2

Promises + async and await + Errors & try/catch

90 min

Start
3

HTTP, JSON & REST + Fetch & UI states + Concurrency with Promise.all

90 min

Start
4

Practice Lab

45 min

Start
5

API Explorer + Assessment

90 min

Start

All lessons

01

Sync vs async

25 min · Build a practical mental model for sync vs async and use it in working JavaScript.

02

Event loop

30 min · Build a practical mental model for event loop and use it in working JavaScript.

03

Promises

35 min · Build a practical mental model for promises and use it in working JavaScript.

04

async and await

25 min · Build a practical mental model for async and await and use it in working JavaScript.

05

Errors & try/catch

30 min · Build a practical mental model for errors & try/catch and use it in working JavaScript.

06

HTTP, JSON & REST

35 min · Build a practical mental model for http, json & rest and use it in working JavaScript.

07

Fetch & UI states

25 min · Build a practical mental model for fetch & ui states and use it in working JavaScript.

08

Concurrency with Promise.all

30 min · Build a practical mental model for concurrency with promise.all and use it in working JavaScript.