DEV Community

Discussion on: Sets in Javascript ES6

Collapse
 
damcosset profile image
Damien Cosset

In that last example, we added a reference to the object, inside the variable obj. By setting obj to null, we eliminate the last reference to the object we stored in our set. Therefore, because this is a WeakSet, the object is garbage-collected in order to free memory.

Hope it's clear :)