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on

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Listen to changes in the observable's value.

.on( handler[, queue='mutate'] )

This adds an event handler in the observable's handlers tree. If this is the first handler, the observable's onBound method is called.

observable.on(function(newVal){ ... });
observable.on(function(newVal){ ... }, "notify");

Parameters

  1. handler {function(newValue, oldValue)}:

    A handler that will be called with the new value of the observable and optionally the old value of the observable.

  2. queue {String}:

    The can-queues queue this event handler should be bound to. By default the handler will be called within the mutate queue.

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