Slider — logic2b/ui

import { Slider } from "@/components/ui/slider"

export default function SliderDemo() {
  return <Slider defaultValue={[50]} max={100} step={1} className="w-[60%]" />
}

Installation

npx logic2b@latest add slider

Working with an AI assistant? Copy this prompt into Claude Code, Cursor or Copilot — it carries the install steps, a no-CLI fallback and a verification checklist.

Add the "slider" item from the logic2b ui registry (https://ui.logic2b.com) to this project. Follow every step and verify at the end.

## Steps

1. If the project has no `components.json` yet, set up logic2b ui first:

   ```bash
   npx logic2b@latest init
   ```

2. Install the item (the CLI resolves registry dependencies automatically):

   ```bash
   npx logic2b@latest add slider
   ```

3. Install any npm dependencies the command prints.

## If the CLI is not available

Do it manually from the registry payload:

1. Fetch https://ui.logic2b.com/r/slider.json.
2. Write every entry in `files[]` to its mapped project path (see below).
3. Repeat (recursively) for each name in `registryDependencies`.
4. Install every package listed in `dependencies` across those payloads.

## Registry reference

- Index of every item: https://ui.logic2b.com/r/index.json
- Item payload (full source): https://ui.logic2b.com/r/<name>.json
- Usage examples per item: https://ui.logic2b.com/r/demos/index.json → https://ui.logic2b.com/r/demos/<demo>.json
- Docs index for agents: https://ui.logic2b.com/llms.txt (full docs: https://ui.logic2b.com/llms-full.txt)
- Every docs page is Markdown when you append `.md` to its URL.

Registry file paths map to project paths like this:
- `ui/*` → `@/components/ui/*`
- `blocks/<name>/*` → `@/components/*`
- `charts/*` → `@/components/charts/*`
- `hooks/*` → `@/hooks/*`
- `lib/utils.ts` → `@/lib/utils.ts`
- `theme.css` → next to the project's Tailwind entry stylesheet

## Conventions (do not break these)

- Tailwind CSS v4 (CSS-first config; no tailwind.config.js needed) and React 19.
- All colors go through semantic tokens (`bg-primary`, `text-muted-foreground`,
  `border-border`, …). Never hardcode hex/oklch values in components.
- Dark mode is class-based: toggle `.dark` on `<html>`.
- Icons come from lucide-react.

## Verify before finishing

1. The dev server starts and the app renders without console errors.
2. TypeScript compiles (`tsc --noEmit` or the framework's check).
3. Components use the theme: a `<Button>` shows the primary token color,
   and toggling `.dark` on `<html>` switches the palette.

Install the dependencies:

npm install radix-ui

Copy into ui/slider.tsx:

"use client"

import * as React from "react"
import { Slider as SliderPrimitive } from "radix-ui"

import { cn } from "@/lib/utils"

function Slider({
  className,
  defaultValue,
  value,
  min = 0,
  max = 100,
  ...props
}: React.ComponentProps<typeof SliderPrimitive.Root>) {
  const _values = React.useMemo(
    () =>
      Array.isArray(value)
        ? value
        : Array.isArray(defaultValue)
          ? defaultValue
          : [min, max],
    [value, defaultValue, min, max]
  )

  return (
    <SliderPrimitive.Root
      data-slot="slider"
      defaultValue={defaultValue}
      value={value}
      min={min}
      max={max}
      className={cn(
        "relative flex w-full touch-none items-center select-none data-[disabled]:opacity-50 data-[orientation=vertical]:h-full data-[orientation=vertical]:min-h-44 data-[orientation=vertical]:w-auto data-[orientation=vertical]:flex-col",
        className
      )}
      {...props}
    >
      <SliderPrimitive.Track
        data-slot="slider-track"
        className={cn(
          "bg-muted relative grow overflow-hidden rounded-full data-[orientation=horizontal]:h-1.5 data-[orientation=horizontal]:w-full data-[orientation=vertical]:h-full data-[orientation=vertical]:w-1.5"
        )}
      >
        <SliderPrimitive.Range
          data-slot="slider-range"
          className={cn(
            "bg-primary absolute data-[orientation=horizontal]:h-full data-[orientation=vertical]:w-full"
          )}
        />
      </SliderPrimitive.Track>
      {Array.from({ length: _values.length }, (_, index) => (
        <SliderPrimitive.Thumb
          data-slot="slider-thumb"
          key={index}
          className="border-primary bg-background ring-ring/50 block size-4 shrink-0 rounded-full border shadow-sm transition-[color,box-shadow] hover:ring-4 focus-visible:ring-4 focus-visible:outline-hidden disabled:pointer-events-none disabled:opacity-50"
        />
      ))}
    </SliderPrimitive.Root>
  )
}

export { Slider }

Usage

import { Slider } from "@/components/ui/slider"

<Slider defaultValue={[50]} max={100} step={1} />

API

Built on Radix Slider.Root. Values are always arrays, so a single-thumb slider uses [value] and a range uses [start, end].

Prop	Type	Default
`defaultValue`	`number[]`	`[min, max]`
`value`	`number[]` — controlled value	—
`onValueChange`	`(value: number[]) => void`	—
`min`	`number`	`0`
`max`	`number`	`100`
`step`	`number`	`1`
`orientation`	`horizontal \| vertical`	`horizontal`
`disabled`	`boolean`	`false`

Examples

Range

import { Slider } from "@/components/ui/slider"

export default function SliderRangeDemo() {
  return (
    <Slider defaultValue={[25, 75]} max={100} step={1} className="w-[60%]" />
  )
}

Controlled

Volume40

import * as React from "react"

import { Label } from "@/components/ui/label"
import { Slider } from "@/components/ui/slider"

export default function SliderControlledDemo() {
  const [value, setValue] = React.useState([40])

  return (
    <div className="flex w-[60%] flex-col gap-3">
      <div className="flex items-center justify-between">
        <Label htmlFor="volume">Volume</Label>
        <span className="text-muted-foreground text-sm tabular-nums">
          {value[0]}
        </span>
      </div>
      <Slider
        id="volume"
        value={value}
        onValueChange={setValue}
        max={100}
        step={5}
      />
    </div>
  )
}

Vertical

import { Slider } from "@/components/ui/slider"

export default function SliderVerticalDemo() {
  return (
    <div className="flex h-48 items-center gap-8">
      <Slider defaultValue={[60]} max={100} step={1} orientation="vertical" />
      <Slider
        defaultValue={[20, 80]}
        max={100}
        step={1}
        orientation="vertical"
      />
      <Slider
        defaultValue={[40]}
        max={100}
        step={1}
        orientation="vertical"
        disabled
      />
    </div>
  )
}

Accessibility

Each thumb is a slider role element that is fully keyboard operable.
Arrow keys move by step; Page Up / Page Down move by a larger increment; Home / End jump to min / max.
Associate a visible label with the control (e.g. via Label htmlFor or aria-label) so screen readers announce its purpose.
On range sliders each thumb is focusable independently and cannot cross past its neighbor.