It's also why many of the UI toolkits on JS "spa"s suck. They often lack interaction that people do use, but the developer wasn't aware of. DoubleClick on buttons, enter in text fields, home-end in selectlists, typing in selectlists and so on.
The the better UI toolkits slowly start to accumulate all these, grow wieldy, sluggish and get replaced by a "fresh" and "snappy" alternative and the circle continues.
The the better UI toolkits slowly start to accumulate all these, grow wieldy, sluggish and get replaced by a "fresh" and "snappy" alternative and the circle continues.