The `beginasync` event

This page is specific to: WebApp.Net Version:0.50.6

December, 23rd 2009

Note: This feature is new in the WebApp.Net framework version 0.5.

This event is raised just before the XMLHTTPRequest is processed by the WebApp.Net framework (regardless of the value of the async parameter). This let you, for instance, enable a custom loading indicator. For more infromation about events and how to catch them, read Working with events.

print copy to clipboardMethod 5.3.1

// Add a new listener
WebApp.AddEventListener("beginasync", handler);

// Remove a previously set listener
WebApp.RemoveEventListener("beginasync", previousHandler);

Contextual information

The evtObj object parameter passed to the handler is based on the Common event object structure.

object

The beginasync event object has the following contextual information.

evtObj.context: (Array). Base parameters of the request.
evtObj.context[0]: (String). Requested URL.
evtObj.context[1]: (String). Parameters if any (POST request only).

Remarks

This event is cancelable. To cancel this event (and the XMLHTTPRequest) the handler can return false.

History

Date	Version	By	Changes
20091109	0.5.0	CA	Event is now cancelable
20090613		CA	Fixed context parameter description
20090307	0.5.0RC3	CA	Added beginasync event and target property

The beginasync event