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No.51 · Controls

Histogram Range

A price range slider that shows you the data you're filtering: bars of the distribution sit behind the track, light up inside your range, and the result count updates as you drag.

The prompt

The design brief behind this component — reuse it to regenerate, remix, or explain it.

Build a two-thumb range filter drawn over the data it filters. A 72px histogram (36 bins, heights normalised to the tallest) sits directly above the track; bars whose centre falls inside the selected range turn accent, the rest stay dim — so you can see where the items are before you move a thumb. A mono 'N results' count updates live (aria-live). The track has a rail, an accent fill between the thumbs, and two round thumbs with soft accent halos that grow on hover/focus. Pressing anywhere on the track grabs the nearer thumb and drags it (pointer capture); thumbs can't cross (10-unit minimum gap). Each thumb is its own role=slider with arrows (Shift ×5) and descriptive aria-valuetext. The min/max values show below as mono chips joined by a hairline, with '+' when the max is at the top of the scale.

Notes

Interaction
Drag either thumb (or press on the track to jump the nearer one); arrows adjust the focused thumb.
Motion
Bar colour 240ms as the range changes; thumb halo 200ms.
Accessibility
Two role=slider thumbs with labels, bounds and value text; the result count is announced; the histogram is decorative. Reduced motion removes transitions.
Responsive
Fluid to 26rem; bars flex to fit.
On touch
Press-and-drag anywhere on the track.

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