38 Scroll Seek Placeholder. 38 of 95.
38/SCROLL BEHAVIOR/38 of 95
Scroll Seek Placeholder
Dragging the scrollbar can preview the destination.
The problem
Dragging the scrollbar jumps blind into dense content with no sense of which section you are seeking.
The solution
While dragging, only a section placeholder/skeleton shows; full content commits on release.
Experiment
Play with the values
8
0.9
How it works
- Dragging the scrollbar thumb is a seek, not a slow scroll through every row.
- Thumb position maps to a section of the list.
- A placeholder or skeleton previews that section while the thumb is down.
- Heavy row content stays deferred during the drag.
- The full section renders when the thumb is released.
Seen in
Long documents
Chapter titles appear while scrubbing so you know which section you will land on.
Photo libraries
Month or album labels overlay during fast scrollbar seeks.
Code files
Symbol or line-range previews show while dragging the editor scrollbar.
Chat archives
Date chips preview the destination day while scrubbing a long transcript.