Here is some content - A. Notice the delay before onComplete fires. This is due to the transition effect, the onComplete will not fire until the slide element stops "elasticing." Also, notice that if you click back and forth, it will "cancel" the previous call and give the new one priority.
Here is some content - B. Notice how if you click me multiple times quickly I "chain" the events. This slide is set up with the option "link: 'chain'"