FinalizationRegistry() constructor
The FinalizationRegistry
constructor creates a FinalizationRegistry
object that uses the given callback.
Syntax
// Arrow callback function new FinalizationRegistry(heldValue => { ... } ) // Callback function new FinalizationRegistry(callbackFn) // Inline callback function new FinalizationRegistry(function callbackFn(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 | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
FinalizationRegistry |
84 |
84 |
79 |
No |
70 |
14.1 |
84 |
84 |
79 |
60 |
14.5 |
14.0 |
See also
© 2005–2021 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