IK Interview Knowledge Book

Topics Practice Examples Playground

RU

Computer Science and Algorithms 4
JavaScript Core 8
TypeScript 4
HTML, CSS, and Browser Platform 3
Frontend Frameworks 4
Node.js, APIs, and Security 6
Testing, Design, and Architecture 9
System Design and Data 2
- Databases and Storage 9
- ORM and Data Access 6
Tooling, Platform, and Process 10

JavaScript Core Memory

intermediate

Memory

Garbage collection, reachability, leaks, WeakMap, WeakSet, and retained closures.

Practice for this topic

When is WeakMap a better fit than Map?

Runnable examples

WeakMap metadata cache