The FinalizationRegistry constructor creates a FinalizationRegistry object that uses the given callback.
FinalizationRegistry() constructor
Syntax
// Arrow callback function new FinalizationRegistry(heldValue => { /* ... */ } ) // Callback function new FinalizationRegistry(callbackFn) // Inline callback function new FinalizationRegistry(function(heldValue) { /* ... */ })
Parameters
-
callback -
The callback function this registry should use.
Examples
Creating a new registry
You create the registry passing in the callback:
const registry = new FinalizationRegistry(heldValue => { // .... });
Specifications
Browser compatibility
| Desktop | Mobile | Server | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | Deno | Node.js | |
FinalizationRegistry |
84
|
84
|
79
|
No
|
70
|
14.1
|
84
|
84
|
79
|
60
|
14.5
|
14.0
|
1.0
|
14.6.0
13.0.0
|
See also
© 2005–2022 MDN contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/FinalizationRegistry/FinalizationRegistry
