This function is used in Persona to cause the browser to reset the automatic / persistent login flag for a website. After being called, the user will need to explicitly log back into your site instead of being signed in automatically.
This function enables a web site to use Persona to authenticate its users. It must be invoked from within a click handler. For example, you should call it when a user clicks your "log in with Persona" button.
The MouseEvent.ctrlKey read-only property returns a Boolean that indicates if the control key was pressed (true) or not (false) when the event occured.
The MouseEvent.getModifierState() method returns the current state of the specified modifier key: true if the modifier is active (i.e., the modifier key is pressed or locked), otherwise, false.
MutationObserver provides developers a way to react to changes in a DOM. It is designed as a replacement for Mutation Events defined in the DOM3 Events specification.