topic · JavaScript

Promises & async/await — Error Propagation, Sequencing, Race Conditions

JavaScript skills for the React Developer (Frontend) career path. Filter, model, and reason about the real data this role works with every day.

Professional Junior priority 1 Sandbox & Simulation Sandbox & Interactive Quiz

What you'll learn

JavaScript skills for the React Developer (Frontend)

Building on Closures & this — Arrow vs Function, bind/call/apply, Event Handlers, this lesson focuses on the practical JavaScript toolkit a working React Developer (Frontend) reaches for on the job.

javascriptpromiseasyncawaitraceerror-handling

Sandbox preview

Try the first query

-- JavaScript — your first interaction
SELECT example, value
FROM javascript_dataset
WHERE priority = '1'
AND career = 'React Developer (Frontend)';

▸ preview · Sprint-2 will replace this with a live runner

Next up in this path

fetch & AbortController — Timeouts, Retries, Streaming, Cancellation

Once this topic clicks, the recommended next step keeps the learning streak going on adjacent skills in the same career path.

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Build status

Sprint-1 stub

This is the Sprint-1 stub for ai.careerplane.technology.react-developer.javascript.promises-async. The fully-generated topic page (sandbox + quiz + AI hints + interactive tooling) lands in Sprint-2 at static/content/technology/React Developer (Frontend)/JavaScript/Promises & async/await — Error Propagation, Sequencing, Race Conditions/index.html (per arch/memo.md → D-2026-04-22-13). The //go:embed all:static directive auto-serves it on the next container rebuild — no server-code change needed.

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