Scrollbar
A scrollbar is a control allowing end-users to select values within a specific range. A scrollbar provides the following visual elements to allow value selection (also called scrolling).
A scrollbar value is always synchronized with the thumb’s position. End-users can move the thumb to select a specific scrollbar value or gradually adjust it. This can be accomplished either by clicking the scroll buttons or the shaft, or by dragging the thumb to the desired position. Clicking scroll buttons moves the thumb a small distance (smooth scrolling), while clicking the shaft moves the thumb a large distance (accelerated scrolling). You can adjust distance values as required, or even make them match to enable a consistent scrolling behavior.