Docs
slider

slider

An input where the user selects a value from within a given range.

DocsAPI Reference

Installation

npx duck-ui@latest add slider
npx duck-ui@latest add slider

Usage

import { Slider } from "@/components/ui/slider"
import { Slider } from "@/components/ui/slider"
<Slider defaultValue={[33]} max={100} step={1} />
<Slider defaultValue={[33]} max={100} step={1} />

API Reference

Slider.Root

  • min (number, optional, default: 0): Minimum allowed value.
  • max (number, optional, default: 100): Maximum allowed value.
  • step (number, optional, default: 1): Increment step for values.
  • value (number[], optional): Controlled values array (one or two values for range sliders).
  • defaultValue (number[], optional, default: [50]): Uncontrolled initial values.
  • onValueChange ((value: number[]) => void, optional): Callback fired when slider values change.
  • orientation ('horizontal' | 'vertical', optional, default: 'horizontal'): Slider orientation.
  • rtl (boolean, optional, default: false): Enables right-to-left layout support.
  • ...props (Omit<React.HTMLProps<HTMLDivElement>, 'defaultValue'>): Props forwarded to the root <div> element.

Behavior: Provides slider state, value management, and interaction logic through context to all child components (Track, Range, Thumb). Handles both single-value and range sliders with pointer and keyboard interactions, snapping values to step and clamping between min and max.

Slider.Track

  • props (React.HTMLAttributes<HTMLDivElement>): Props forwarded to the track container <div>.

Behavior: Renders the slider’s track area where thumbs can be moved. Automatically sizes based on orientation and stores a ref for position-to-value calculations.

Slider.Range

  • props (React.HTMLAttributes<HTMLDivElement>): Props forwarded to the range indicator <div>.

Behavior: Displays the active filled portion of the slider between thumbs (or from min to current value in single-thumb sliders). Position and size are computed based on values, min, max, and orientation.

Slider.Thumb

  • index (number, required): The index of the thumb in the values array.
  • ...props (React.HTMLProps<HTMLDivElement>): Props forwarded to the thumb <button> element.

Behavior: Interactive handle for selecting slider values. Supports dragging with pointer events and value adjustments via keyboard (Arrow, PageUp, PageDown, Home, End). Positions itself along the track relative to its current value.

SliderContext & useSliderContext()

  • SliderContext: React context providing slider state and methods:

    • min, max, step, values, orientation, rtl
    • trackRef — Ref to track element.
    • setValueAt(index, value) — Updates value for a specific thumb.
    • positionToValue(pos, rect) — Converts pointer position to slider value.

  • useSliderContext(): Hook for accessing SliderContext. Throws an error if used outside Slider.Root.

Behavior: Enables internal communication between slider components without prop drilling.

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