Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The invoker read-only property of the PerformanceScriptTiming interface returns a string value indicating the identity of the feature that, when invoked, ran the script.
A string, the structure of which depends on the script's PerformanceScriptTiming.invokerType value:
invokerType |
invoker string structure | Example(s) |
|---|---|---|
"user-callback" | The object class the containing function is defined on, followed by a dot, followed by the function name. |
"Window.requestAnimationFrame", "Window.setTimeout"
|
"event-listener" | The tagName of the element, followed by a hash and its id (#id) or by src= and its src value in square brackets ([src=url]) if an id is not present, followed by a dot, followed by the event handler property. |
"IMG#hero.onload", "IMG[src=https://example.com/img.jpg].onload", "BUTTON#updateCart.onclick"
|
"resolve-promise" or "reject-promise"
| The object and method that invoked the promise, followed by a dot, followed by "then" for "resolve-promise" and "catch" for "reject-promise". |
"Response.json.then", "Response.json.catch"
|
"classic-script" or "module-script"
| The source URL of the invoking script. | "https://example.com/scripts/myscript.js" |
See Long animation frame timing for examples related to the Long Animation Frames API.
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Opera | Safari | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | WebView Android | ||
invoker |
123 | 123 | No | 109 | No | 123 | No | 82 | No | No | 123 | |
© 2005–2023 MDN contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/PerformanceScriptTiming/invoker