Garbage collection, memory leaks, deep copy vs shallow copy, and performance pitfalls in loops and DOM updates
JavaScript uses garbage collection, but leaks still happen when references stay alive unexpectedly or when code creates unnecessary work.
- Leaked references block collection
- Shallow copies can share nested state
- Repeated DOM writes and bad loops can hurt performance
Garbage collection, memory leaks, deep copy vs shallow copy, and performance pitfalls in loops and DOM updates