Watch

The Watch accessor (class ) makes its attached attribute observe another notifying attribute.

This accessor class is often used with the Callback accessor to change a value of the prototype when a callback is triggered. The Watch accessor connects the triggering attribute containing the callback to the watching attribute that must be changed.

Parameters

• Notifying Attribute: Attribute that is observed. This attribute must be one of the attributes that has a Notify or a Callback accessor.

Example

The Watch clicked accessor links the clicked value to the toggle value, which allows the running attribute to be switched whenever the user presses the button attached to the clicked value.