Knowledge Check

Effect cleanup decision

While reviewing React hooks effects, each render adds another event listener. Which action best addresses the problem?

What this task practices

Effect cleanup decision is a knowledge check interview exercise that trains prompt interpretation, explicit assumptions, a concrete response, and a clear explanation of tradeoffs. The catalog marks it as medium difficulty. It focuses on React Hooks Effects, Effect Cleanup. The signed-in workspace provides the tools for the round and evaluates the attempt against task-specific criteria. Reference solutions, hidden checks, evaluator instructions, and candidate work remain private.