Challenges

Master AI-assisted coding through hands-on practice

33 challenges

6 categories

All Easy Medium Hard|Backend Frontend Incident Resolution DevOps Database AI Skills

The Event Emitter Memory Mystery

This Node.js application has a subtle memory behavior. Analyze the code and predict what will happen when processData is called 1000 times. Explain the memory implications.

Fix the Stale Closure

A counter component shows incorrect values due to a stale closure in the event handler. Fix the state management issue.