# WeakSet

A Set-like collection holding objects weakly so it does not prevent garbage collection.

## What is **WeakSet** in JavaScript?

**WeakSet** — A Set-like collection holding objects weakly so it does not prevent garbage collection.

```javascript
const visited = new WeakSet();
visited.add(pageElement);
```

Level: Freelancer · [More JavaScript terms at this level](https://www.ask-codey.com/glossary/subjects/javascript/freelancer)

Updated: September 27, 2026

Source: https://www.ask-codey.com/glossary/weakset