Handling Custom Events with a Listener

To handle an event that is emitted or broadcasted, you use the $on() method. The $on() method uses the following syntax, where name is the name of the event to listen for:

scope.$on(name, listener)

The listener parameter is a function that accepts the event as the first parameter and any arguments passed by the $emit() or $broadcast() method as subsequent parameters. The event object has the following properties:

■ targetScope: The scope from which $emit() or $broadcast() was called.

■ currentScope: The scope that is currently handling the event.

■ name: The name of the event.

■ stopPropagation(): A function that stops the event from being propagated up or down the scope hierarchy.

■ preventDefault(): A function that prevents default behavior in a browser event but only executes your own custom code.

■ defaultPrevented: A Boolean that is true if event.preventDefault() has been called.