Do You Know What the Scroller in a Scroll Bar Tells You
Whenever you view a document that’s longer than will fit onscreen, a scroll bar appears (often only if you’re actively scrolling). That’s true whether you’re using an iPhone, iPad, or Mac. Inside the scroll bar is a control called a scroller that you can drag to scroll more quickly than by swiping or using keyboard keys. But did you know its size and position are useful for orienting yourself within the page? First, the scroller position within the scroll bar reflects how far down the page you are. Second, the...