A Command is a function with an extra
canExecute observable property to determinewhether the command can be executed. When executed, a Command function will check thevalue of canExecute and throw if false.This type describes an interface and is not intended to be instantiated directly.See createCommand to create a command from a function.
Members
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afterExecute : Event
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Gets an event which is raised after the command executes, the eventis raised with the return value of the command as its only parameter.
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Default Value:
undefined -
beforeExecute : Event
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Gets an event which is raised before the command executes, the eventis raised with an object containing two properties: a
cancelproperty,which if set to false by the listener will prevent the command from being executed, andanargsproperty, which is the array of arguments being passed to the command.-
Default Value:
undefined -
Gets whether this command can currently be executed. This property is observable.
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Default Value:
undefined