The WindowEventHandlers
mixin describes the event handlers common to several interfaces like Window
, or HTMLBodyElement
and HTMLFrameSetElement
. Each of these interfaces can implement additional specific event handlers.
Note: WindowEventHandlers
is a mixin and not an interface; you can't actually create an object of type WindowEventHandlers
.
Properties
The events properties, of the form onXYZ
, are defined on the WindowEventHandlers
, and implemented by Window
, and WorkerGlobalScope
for Web Workers.
WindowEventHandlers.onafterprint
- Is an
EventHandler
representing the code to be called when theafterprint
event is raised. WindowEventHandlers.onbeforeprint
- Is an
EventHandler
representing the code to be called when thebeforeprint
event is raised. WindowEventHandlers.onbeforeunload
- Is an
EventHandler
representing the code to be called when thebeforeunload
event is raised. WindowEventHandlers.onhashchange
- Is an
EventHandler
representing the code to be called when thehashchange
event is raised. WindowEventHandlers.onlanguagechange
'- Is an
EventHandler
representing the code to be called when thelanguagechange
event is raised. WindowEventHandlers.onmessage
- Is an
EventHandler
representing the code to be called when themessage
event is raised. WindowEventHandlers.onmessageerror
- Is an
EventHandler
representing the code to be called when theMessageError
event is raised. WindowEventHandlers.onoffline
- Is an
EventHandler
representing the code to be called when theoffline
event is raised. WindowEventHandlers.ononline
- Is an
EventHandler
representing the code to be called when theonline
event is raised. WindowEventHandlers.onpagehide
- Is an
EventHandler
representing the code to be called when thepagehide
event is raised. WindowEventHandlers.onpageshow
- Is an
EventHandler
representing the code to be called when thepageshow
event is raised. WindowEventHandlers.onpopstate
- Is an
EventHandler
representing the code to be called when thepopstate
event is raised. WindowEventHandlers.onrejectionhandled
- Is an
EventHandler
representing the code to be called when therejectionhandled
event is raised, indicating that aPromise
was rejected and the rejection has been handled. WindowEventHandlers.onstorage
- Is an
EventHandler
representing the code to be called when thestorage
event is raised. WindowEventHandlers.onunhandledrejection
- Is an
EventHandler
representing the code to be called when theunhandledrejection
event is raised, indicating that aPromise
was rejected but the rejection was not handled. WindowEventHandlers.onunload
- Is an
EventHandler
representing the code to be called when theunload
event is raised.
Methods
This interface defines no method.
Specifications
Specification | Status | Comment |
---|---|---|
HTML Living StandardThe definition of 'WindowEventHandlers' in that specification. | Living Standard | No change since the latest snapshot, HTML 5.1. |
HTML 5.1The definition of 'WindowEventHandlers' in that specification. | Recommendation | Snapshot of HTML Living Standard. Added onlanguage since the HTML5 snapshot.
|
HTML5The definition of 'WindowEventHandlers' in that specification. | Recommendation | Snapshot of HTML Living Standard. Creation of WindowEventHandlers (properties where on the target before it).
|
Browser compatibility
The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Update compatibility data on GitHub
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
WindowEventHandlers
|
Chrome
Full support Yes |
Edge
Full support 12 |
Firefox
Full support Yes |
IE
Full support Yes |
Opera
Full support Yes |
Safari
Full support Yes |
WebView Android
Full support Yes |
Chrome Android
Full support Yes |
Firefox Android
Full support Yes |
Opera Android
Full support Yes |
Safari iOS
Full support Yes |
Samsung Internet Android
Full support Yes |
onafterprint
|
Chrome
Full support 63 |
Edge
Full support 12 |
Firefox
Full support 6 |
IE
Full support Yes |
Opera
Full support 50 |
Safari
Full support 13 |
WebView Android
Full support 63 |
Chrome Android
Full support 63 |
Firefox Android
? |
Opera Android
Full support 46 |
Safari iOS
Full support 13 |
Samsung Internet Android
Full support 8.0 |
onbeforeprint
|
Chrome
Full support 63 |
Edge
Full support 12 |
Firefox
Full support 6 |
IE
Full support Yes |
Opera
Full support 50 |
Safari
Full support 13 |
WebView Android
Full support 63 |
Chrome Android
Full support 63 |
Firefox Android
? |
Opera Android
Full support 46 |
Safari iOS
Full support 13 |
Samsung Internet Android
Full support 8.0 |
onbeforeunload
|
Chrome
Full support 1 |
Edge
Full support 12 |
Firefox
Full support 1 |
IE
Full support 4 |
Opera
Full support 12 |
Safari
Full support 3 |
WebView Android
Full support 1 |
Chrome Android
Full support 18 |
Firefox Android
Full support 4 |
Opera Android
Full support 12 |
Safari iOS
Full support 1 |
Samsung Internet Android
Full support 1.0 |
onhashchange
|
Chrome
Full support 5 |
Edge
Full support 12 |
Firefox
Full support 3.6 |
IE
Full support 8 |
Opera
Full support 10 |
Safari
Full support 5 |
WebView Android
Full support ≤37 |
Chrome Android
Full support 18 |
Firefox Android
Full support 4 |
Opera Android
Full support 10.1 |
Safari iOS
Full support 5 |
Samsung Internet Android
Full support 1.0 |
Chrome
Full support 37 |
Edge
Full support ≤79 |
Firefox
Full support 32 |
IE
No support No |
Opera
Full support 24 |
Safari
? |
WebView Android
Full support 37 |
Chrome Android
Full support 37 |
Firefox Android
Full support 4 |
Opera Android
Full support 24 |
Safari iOS
? |
Samsung Internet Android
Full support 4.0 | |
onmessage
|
Chrome
Full support 60 |
Edge
Full support ≤79 |
Firefox
? |
IE
? |
Opera
Full support 47 |
Safari
? |
WebView Android
Full support 60 |
Chrome Android
Full support 60 |
Firefox Android
? |
Opera Android
Full support 44 |
Safari iOS
? |
Samsung Internet Android
Full support 8.0 |
onmessageerror
|
Chrome
Full support 60 |
Edge
Full support ≤79 |
Firefox
Full support 57 |
IE
? |
Opera
Full support 47 |
Safari
? |
WebView Android
Full support 60 |
Chrome Android
Full support 60 |
Firefox Android
Full support 57 |
Opera Android
Full support 44 |
Safari iOS
? |
Samsung Internet Android
Full support 8.0 |
onpopstate
|
Chrome
Full support 5 |
Edge
Full support 12 |
Firefox
Full support 4 |
IE
Full support 10 |
Opera
Full support 11.5 |
Safari
Full support 6 |
WebView Android
Full support 37 |
Chrome Android
Full support 18 |
Firefox Android
Full support 4 |
Opera Android
Full support 11.5 |
Safari iOS
Full support 5.1 |
Samsung Internet Android
Full support 1.0 |
onrejectionhandled
|
Chrome
Full support 49 |
Edge
Full support ≤79 |
Firefox Full support 69 Full support 69 Full support 68 Disabled' From version 68: this feature is behind the Notes' This event handler was added in Firefox 55 but was disabled since it wasn't fully implemented. It was fully implemented in Firefox 68 and enabled by default in Firefox 69.
Disabled' From version 55: this feature is behind the |
IE
No support No |
Opera
Full support 36 |
Safari
Full support 11 |
WebView Android
Full support 49 |
Chrome Android
Full support 49 |
Firefox Android Full support 68 Full support 68 Disabled' From version 68: this feature is behind the Notes' This event handler was added in Firefox 55 but was disabled since it wasn't fully implemented. It was fully implemented in Firefox 68 but not enabled by default.
Disabled' From version 55: this feature is behind the |
Opera Android
No support No |
Safari iOS
Full support 11.3 |
Samsung Internet Android
Full support 5.0 |
onstorage
|
Chrome
Full support 1 |
Edge
Full support ≤18 |
Firefox
Full support 45 |
IE
? |
Opera
Full support 15 |
Safari
? |
WebView Android
Full support ≤37 |
Chrome Android
Full support 18 |
Firefox Android
Full support 45 |
Opera Android
Full support 14 |
Safari iOS
? |
Samsung Internet Android
Full support 1.0 |
onunhandledrejection
|
Chrome
Full support 49 |
Edge
Full support ≤79 |
Firefox Full support 69 Full support 69 Full support 68 Disabled' From version 68: this feature is behind the Notes' This event handler was added in Firefox 55 but was disabled since it wasn't fully implemented. It was fully implemented in Firefox 68 and enabled by default in Firefox 69.
Disabled' From version 55: this feature is behind the |
IE
No support No |
Opera
Full support 36 |
Safari
Full support 11 |
WebView Android
Full support 49 |
Chrome Android
Full support 49 |
Firefox Android Full support 68 Full support 68 Disabled' From version 68: this feature is behind the Notes' This event handler was added in Firefox 55 but was disabled since it wasn't fully implemented. It was fully implemented in Firefox 68 but not enabled by default.
Disabled' From version 55: this feature is behind the |
Opera Android
No support No |
Safari iOS
Full support 11.3 |
Samsung Internet Android
Full support 5.0 |
onunload
|
Chrome
Full support Yes |
Edge
Full support 12 |
Firefox
Full support Yes |
IE
Full support Yes |
Opera
Full support Yes |
Safari
Full support Yes |
WebView Android
Full support Yes |
Chrome Android
Full support Yes |
Firefox Android
Full support Yes |
Opera Android
Full support Yes |
Safari iOS
Full support Yes |
Samsung Internet Android
Full support Yes |
Legend
- Full support
- Full support
- No support
- No support
- Compatibility unknown
- Compatibility unknown
- Experimental. Expect behavior to change in the future.'
- Experimental. Expect behavior to change in the future.
- See implementation notes.'
- See implementation notes.
- User must explicitly enable this feature.'
- User must explicitly enable this feature.
See also
WindowEventHandlers by Mozilla Contributors is licensed under CC-BY-SA 2.5.