What does ‘::’ (double colon) do in javascript for events?

Question

I saw this code and I\'m scratching my head trying to decide how it works.

Answer 1

This is an extension to the Javascript language implemented by Microsoft. It's purpose is to specify an event handler for a COM object referenced on the page. SpeechMikeControl is the globally-scoped name of the COM (and/or ActiveX) object:

• either with an OBJECT or some other element, which has an id property of SpeechMikeControl, or
• a global variable SpeechMikeControl declared somewhere previously in the Javascript

SPMEventButton is the name of the COM event which will be raised by the SpeechMikeControl object under who-knows-what circumstances.

The double colon is an instruction to connect the function body as a handler to the control's event.