Slider

Slider and RangeSlider components

Import

Source

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Docs

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Package

@mantine/core

Usage

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Color

Size

Radius

Show label on hover

Label always on

import { Slider } from '@mantine/core';

function Demo() {
  return (
    <Slider
      color="blue"
      marks={[
        { value: 20, label: '20%' },
        { value: 50, label: '50%' },
        { value: 80, label: '80%' },
      ]}
    />
  );
}

Controlled

Controlled Slider:

import { useState } from 'react';
import { Slider } from '@mantine/core';

function Demo() {
  const [value, setValue] = useState(40);
  return <Slider value={value} onChange={setValue} />;
}

Controlled RangeSlider:

import { useState } from 'react';
import { RangeSlider } from '@mantine/core';

function Demo() {
  const [value, setValue] = useState<[number, number]>([20, 80]);
  return <RangeSlider value={value} onChange={setValue} />;
}

Disabled

import { Slider, RangeSlider } from '@mantine/core';

function Demo() {
  return (
    <>
      <Slider defaultValue={60} disabled />
      <RangeSlider
        mt="xl"
        mb="xl"
        disabled
        defaultValue={[25, 75]}
        marks={[
          { value: 0, label: 'xs' },
          { value: 25, label: 'sm' },
          { value: 50, label: 'md' },
          { value: 75, label: 'lg' },
          { value: 100, label: 'xl' },
        ]}
      />
    </>
  );
}

onChangeEnd

onChangeEnd callback is called when user the slider is stopped from being dragged or value is changed with keyboard. You can use it as a debounced callback to avoid too frequent updates.

onChange value: 50

onChangeEnd value: 50

import { useState } from 'react';
import { Slider, Text, Box } from '@mantine/core';

function Demo() {
  const [value, setValue] = useState(50);
  const [endValue, setEndValue] = useState(50);

  return (
    <Box maw={400} mx="auto">
      <Slider value={value} onChange={setValue} onChangeEnd={setEndValue} />
      <Text mt="md" size="sm">
        onChange value: <b>{value}</b>
      </Text>
      <Text mt={5} size="sm">
        onChangeEnd value: <b>{endValue}</b>
      </Text>
    </Box>
  );
}

Control label

To change label behavior and appearance, set the following props:

label – formatter function, accepts value as an argument, set null to disable label, defaults to f => f
labelAlwaysOn – if true – label will always be displayed, by default label is visible only when user is dragging
labelTransitionProps – props passed down to the Transition component, can be used to customize label animation

No label

Formatted label

Label always visible

Custom label transition

import { Slider, Text } from '@mantine/core';

function Demo() {
  return (
    <>
      <Text size="sm">No label</Text>
      <Slider defaultValue={40} label={null} />

      <Text size="sm" mt="xl">Formatted label</Text>
      <Slider defaultValue={40} label={(value) => `${value} °C`} />

      <Text size="sm" mt="xl">Label always visible</Text>
      <Slider defaultValue={40} labelAlwaysOn />

      <Text size="sm" mt="xl">Custom label transition</Text>
      <Slider
        defaultValue={40}
        labelTransitionProps={{
          transition: 'skew-down',
          duration: 150,
          timingFunction: 'linear',
        }}
      />
    </>
  );
}

Min, max and step

Decimal step

Step matched with marks

import { Slider, Text } from '@mantine/core';

const marks = [
  { value: 0, label: 'xs' },
  { value: 25, label: 'sm' },
  { value: 50, label: 'md' },
  { value: 75, label: 'lg' },
  { value: 100, label: 'xl' },
];

function Demo() {
  return (
    <>
      <Text>Decimal step</Text>
      <Slider
        defaultValue={0}
        min={-10}
        max={10}
        label={(value) => value.toFixed(1)}
        step={0.1}
        styles={{ markLabel: { display: 'none' } }}
      />

      <Text mt="md">Step matched with marks</Text>
      <Slider
        defaultValue={50}
        label={(val) => marks.find((mark) => mark.value === val)!.label}
        step={25}
        marks={marks}
        styles={{ markLabel: { display: 'none' } }}
      />
    </>
  );
}

Decimal values

To use Slider with decimal values, set min, max and step props:

import { Slider } from '@mantine/core';

function Demo() {
  return <Slider min={0} max={1} step={0.0005} defaultValue={0.5535} />;
}

Use minRange prop to control minimum range between from and to values in RangeSlider. The default value is 10. The example below shows how to use minRange prop to capture decimal values from the user:

import { RangeSlider } from '@mantine/core';

function Demo() {
  return (
    <RangeSlider minRange={0.2} min={0} max={1} step={0.0005} defaultValue={[0.1245, 0.5535]} />
  );
}

Marks

Add any number of marks to slider by setting marks prop to an array of objects:

const marks = [
  { value: 20 }, // -> displays mark on slider track
  { value: 40, label: '40%' }, // -> adds mark label below slider track
];

Note that mark value is relative to slider value, not width:

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80%

20%

50%

80%

import { Slider, RangeSlider } from '@mantine/core';

const marks = [
  { value: 20, label: '20%' },
  { value: 50, label: '50%' },
  { value: 80, label: '80%' },
];

function Demo() {
  return (
    <>
      <Slider defaultValue={40} marks={[{ value: 10 }, { value: 40 }, { value: 95 }]} />
      <Slider defaultValue={40} marks={marks} />
      <RangeSlider defaultValue={[20, 80]} marks={marks} />
    </>
  );
}

Restrict selection to marks

Set restrictToMarks prop to restrict slider value to marks only. Note that in this case step prop is ignored:

import { Slider } from '@mantine/core';

function Demo() {
  return (
    <Slider
      restrictToMarks
      defaultValue={25}
      marks={Array.from({ length: 5 }).map((_, index) => ({ value: index * 25 }))}
    />
  );
}

Thumb size

import { Slider } from '@mantine/core';

function Demo() {
  return <Slider thumbSize={14} defaultValue={20} />;
}

Thumb children

import { Slider, RangeSlider, rem } from '@mantine/core';
import { IconHeart, IconHeartBroken } from '@tabler/icons-react';

function Demo() {
  return (
    <>
      <Slider
        thumbChildren={<IconHeart size="1rem" />}
        color="red"
        label={null}
        defaultValue={40}
        thumbSize={26}
        styles={{ thumb: { borderWidth: rem(2), padding: rem(3) } }}
      />

      <RangeSlider
        mt="xl"
        styles={{ thumb: { borderWidth: rem(2), padding: rem(3) } }}
        color="red"
        label={null}
        defaultValue={[20, 60]}
        thumbSize={26}
        thumbChildren={[<IconHeart size="1rem" key="1" />, <IconHeartBroken size="1rem" key="2" />]}
      />
    </>
  );
}

Scale

You can use the scale prop to represent the value on a different scale.

In the following demo, the value x represents the value 2^x. Increasing x by one increases the represented value by 2 to the power of x.

1 MB

1 GB

import { RangeSlider, Slider } from '@mantine/core';

function valueLabelFormat(value: number) {
  const units = ['KB', 'MB', 'GB', 'TB'];

  let unitIndex = 0;
  let scaledValue = value;

  while (scaledValue >= 1024 && unitIndex < units.length - 1) {
    unitIndex += 1;
    scaledValue /= 1024;
  }

  return `${scaledValue} ${units[unitIndex]}`;
}

const getScale = (v: number) => 2 ** v;

function Demo() {
  return (
    <>
      <Slider
        scale={getScale}
        step={1}
        min={2}
        max={30}
        labelAlwaysOn
        defaultValue={10}
        label={valueLabelFormat}
      />
      <RangeSlider
        mt={50}
        scale={getScale}
        step={1}
        min={2}
        max={30}
        labelAlwaysOn
        defaultValue={[10, 20]}
        label={valueLabelFormat}
      />
    </>
  );
}

Inverted

You can invert the track with the inverted prop:

import { RangeSlider, Slider } from '@mantine/core';

function Demo() {
  return (
    <>
      <Slider inverted defaultValue={80} />
      <RangeSlider inverted defaultValue={[40, 80]} mt="xl" />
    </>
  );
}

Styles API

Slider supports Styles API, you can add styles to any inner element of the component withclassNames prop. Follow Styles API documentation to learn more.

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Component Styles API

Hover over selectors to highlight corresponding elements

/*
 * Hover over selectors to apply outline styles
 *
 */

Example of using Styles API to change Slider styles:

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import { Slider } from '@mantine/core';
import classes from './Demo.module.css';

function Demo() {
  return (
    <Slider
      defaultValue={40}
      marks={[
        { value: 20, label: '20%' },
        { value: 50, label: '50%' },
        { value: 80, label: '80%' },
      ]}
      size={2}
      classNames={classes}
    />
  );
}

Vertical slider

Slider and RangeSlider do not provide vertical orientation as it is very rarely used. If you need this feature you can build it yourself with use-move hook.

Build custom slider

If Slider component does not meet your requirements, you can build a custom slider with use-move hook:

import { useState } from 'react';
import { IconGripVertical } from '@tabler/icons-react';
import { clamp, useMove } from '@mantine/hooks';
import classes from './Demo.module.css';

function Demo() {
  const [value, setValue] = useState(0.3);
  const { ref } = useMove(({ x }) => setValue(clamp(x, 0.1, 0.9)));
  const labelFloating = value < 0.2 || value > 0.8;

  return (
    <div className={classes.root}>
      <div className={classes.track} ref={ref}>
        <div
          className={classes.filled}
          style={{
            width: `calc(${value * 100}% - var(--thumb-width) / 2 - var(--thumb-offset) / 2)`,
          }}
        >
          <span className={classes.label} data-floating={labelFloating || undefined} data-filled>
            {(value * 100).toFixed(0)}
          </span>
        </div>

        <div
          className={classes.empty}
          style={{
            width: `calc(${(1 - value) * 100}% - var(--thumb-width) / 2 - var(--thumb-offset) / 2)`,
          }}
        >
          <span className={classes.label} data-floating={labelFloating || undefined}>
            {((1 - value) * 100).toFixed(0)}
          </span>
        </div>

        <div
          className={classes.thumb}
          style={{ left: `calc(${value * 100}% - var(--thumb-width) / 2)` }}
        >
          <IconGripVertical stroke={1.5} />
        </div>
      </div>
    </div>
  );
}

Accessibility

Slider and RangeSlider components are accessible by default:

Thumbs are focusable
When the user uses mouse to interact with the slider, focus is moved to the slider track, when the user presses arrows focus is moved to the thumb
Value can be changed with arrows with step increment/decrement

To label component for screen readers, add labels to thumbs:

import { RangeSlider, Slider } from '@mantine/core';

function Demo() {
  return (
    <>
      <Slider thumbLabel="Thumb aria-label" />
      <RangeSlider
        thumbFromLabel="First thumb aria-label"
        thumbToLabel="Second thumb aria-label"
      />
    </>
  );
}

Keyboard interactions

Key	Description
`ArrowRight/ArrowUp`	Increases slider value by one step
`ArrowLeft/ArrowDown`	Decreases slider value by one step
`Home`	Sets slider value to min value
`End`	Sets slider value to max value

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