# FinalizationRegistry

An advanced API for requesting a callback after an object is garbage-collected.

## What is **FinalizationRegistry** in JavaScript?

**FinalizationRegistry** — An advanced API for requesting a callback after an object is garbage-collected.

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

Updated: September 27, 2026

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