The following events are available for business process flows:

• OnProcessStatusChange: We can use this event to call our JavaScript function when the status of the process instance changes.
• OnStageChange: If we want to call our JavaScript method on stage change of business process flow, we can use this event.
• OnStageSelected: We can use this event to call our JavaScript function on business process flow stage selection.

Now that we know about forms and form events, let's learn how to use these events to write our JavaScript function using web resources.