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DOM·medium 18 min 75 XP

Event Delegation Resolver

Write resolveDelegatedTarget(items, clickedId) returning the item whose id matches clickedId, or null — the lookup behind a delegated click handler.

Examples

  • resolveDelegatedTarget([{id:1},{id:2}], 2) → {id:2}

Constraints

  • Keep the required function name so the tests can find it
  • Return a value instead of only logging it
  • Do not mutate inputs unless the challenge asks you to
Event Delegation Resolver · editor

Code runs in an isolated Web Worker with a 3-second timeout — no DOM access, and it can never hang the page.