WindowEventHandlers

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.

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 the afterprint event is raised.

WindowEventHandlers.onbeforeprint

Is an EventHandler representing the code to be called when the beforeprint event is raised.

WindowEventHandlers.onbeforeunload

Is an EventHandler representing the code to be called when the beforeunload event is raised.

WindowEventHandlers.onhashchange

Is an EventHandler representing the code to be called when the hashchange event is raised.

WindowEventHandlers.onlanguagechange

Is an EventHandler representing the code to be called when the languagechange event is raised.

WindowEventHandlers.onmessage

Is an EventHandler representing the code to be called when the message event is raised.

WindowEventHandlers.onmessageerror

Is an EventHandler representing the code to be called when the MessageError event is raised.

WindowEventHandlers.onoffline

Is an EventHandler representing the code to be called when the offline event is raised.

WindowEventHandlers.ononline

Is an EventHandler representing the code to be called when the online event is raised.

WindowEventHandlers.onpagehide

Is an EventHandler representing the code to be called when the pagehide event is raised.

WindowEventHandlers.onpageshow

Is an EventHandler representing the code to be called when the pageshow event is raised.

WindowEventHandlers.onpopstate

Is an EventHandler representing the code to be called when the popstate event is raised.

WindowEventHandlers.onrejectionhandled

Is an EventHandler representing the code to be called when the rejectionhandled event is raised, indicating that a Promise was rejected and the rejection has been handled.

WindowEventHandlers.onstorage

Is an EventHandler representing the code to be called when the storage event is raised.

WindowEventHandlers.onunhandledrejection

Is an EventHandler representing the code to be called when the unhandledrejection event is raised, indicating that a Promise was rejected but the rejection was not handled.

WindowEventHandlers.onunload

Is an EventHandler representing the code to be called when the unload event is raised.

This interface defines no method.

• Window and WorkerGlobalScope