Welcome to Mantine, React components library that you always wished for
Welcome to Mantine, React components library that you always wished for

Autocomplete

Autocomplete user input with any list of options

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Source

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Package

@mantine/core

Made with Combobox

Autocomplete is an opinionated component built on top of Combobox component. It has a limited set of features to cover only the basic use cases. If you need more advanced features, you can build your own component with Combobox. You can find examples of custom autocomplete components on the examples page.

Usage

Autocomplete provides user a list of suggestions based on the input, however user is not limited to suggestions and can type anything.

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

function Demo() {
  return (
    <Autocomplete
      label="Your favorite library"
      placeholder="Pick value or enter anything"
      data={['React', 'Angular', 'Vue', 'Svelte']}
    />
  );
}

Controlled

Autocomplete value must be a string, other types are not supported. onChange function is called with a string value as a single argument.

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

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

Data formats

Autocomplete data prop accepts data in one of the following formats:

Array of strings:

import { Autocomplete } from '@mantine/core';
function Demo() {
  return <Autocomplete data={['React', 'Angular']} />;
}

Array of groups with string options:

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

function Demo() {
  return (
    <Autocomplete
      data={[
        { group: 'Frontend', items: ['React', 'Angular'] },
        { group: 'Backend', items: ['Express', 'Django'] },
      ]}
    />
  );
}

Options filtering

By default, Autocomplete filters options by checking if the option label contains input value. You can change this behavior with filter prop.filter function receives an object with the following properties as a single argument:
  • options – array of options or options groups, all options are in { value: string; label: string; disabled?: boolean } format
  • search – current search query
  • limit – value of limit prop passed to Autocomplete

Example of a custom filter function that matches options by words instead of letters sequence:

import { Autocomplete, ComboboxItem, OptionsFilter } from '@mantine/core';

const optionsFilter: OptionsFilter = ({ options, search }) => {
  const splittedSearch = search.toLowerCase().trim().split(' ');
  return (options as ComboboxItem[]).filter((option) => {
    const words = option.label.toLowerCase().trim().split(' ');
    return splittedSearch.every((searchWord) => words.some((word) => word.includes(searchWord)));
  });
};

function Demo() {
  return (
    <Autocomplete
      label="Your country"
      placeholder="Pick value or enter anything"
      data={['Great Britain', 'Russian Federation', 'United States']}
      filter={optionsFilter}
    />
  );
}

Sort options

By default, options are sorted by their position in the data array. You can change this behavior with filter function:

import { Autocomplete, ComboboxItem, OptionsFilter } from '@mantine/core';

const optionsFilter: OptionsFilter = ({ options, search }) => {
  const filtered = (options as ComboboxItem[]).filter((option) =>
    option.label.toLowerCase().trim().includes(search.toLowerCase().trim())
  );

  filtered.sort((a, b) => a.label.localeCompare(b.label));
  return filtered;
};

function Demo() {
  return (
    <Autocomplete
      label="Your favorite library"
      placeholder="Pick value or enter anything"
      data={['4 – React', '1 – Angular', '3 – Vue', '2 – Svelte']}
      filter={optionsFilter}
    />
  );
}

Large data sets

The best strategy for large data sets is to limit the number of options that are rendered at the same time. You can do it with limit prop. Note that if you use a custom filter function, you need to implement your own logic to limit the number of options in filter

Example of Autocomplete with 100 000 options, 5 options are rendered at the same time:

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

const largeData = Array(100_000)
  .fill(0)
  .map((_, index) => `Option ${index}`);

function Demo() {
  return (
    <Autocomplete
      label="100 000 options autocomplete"
      placeholder="Use limit to optimize performance"
      limit={5}
      data={largeData}
    />
  );
}

Scrollable dropdown

By default, the options list is wrapped with ScrollArea.Autosize. You can control dropdown max-height with maxDropdownHeight prop if you do not change the default settings.

If you want to use native scrollbars, set withScrollArea={false}. Note that in this case, you will need to change dropdown styles with Styles API.

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

const data = Array(100)
  .fill(0)
  .map((_, index) => `Option ${index}`);

function Demo() {
  return (
    <>
      <Autocomplete
        label="With scroll area (default)"
        placeholder="Pick value or enter anything"
        data={data}
        maxDropdownHeight={200}
      />

      <Autocomplete
        label="With native scroll"
        placeholder="Pick value or enter anything"
        data={data}
        withScrollArea={false}
        styles={{ dropdown: { maxHeight: 200, overflowY: 'auto' } }}
        mt="md"
      />
    </>
  );
}

Group options

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

function Demo() {
  return (
    <Autocomplete
      label="Your favorite library"
      placeholder="Pick value or enter anything"
      data={[
        { group: 'Frontend', items: ['React', 'Angular'] },
        { group: 'Backend', items: ['Express', 'Django'] },
      ]}
    />
  );
}

Disabled options

When option is disabled, it cannot be selected and is ignored in keyboard navigation.

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

function Demo() {
  return (
    <Autocomplete
      label="Your favorite library"
      placeholder="Pick value or enter anything"
      data={[
        { value: 'react', label: 'React' },
        { value: 'ng', label: 'Angular' },
        { value: 'vue', label: 'Vue', disabled: true },
        { value: 'svelte', label: 'Svelte', disabled: true },
      ]}
    />
  );
}

Combobox props

You can override Combobox props with comboboxProps. It is useful when you need to change some of the props that are not exposed by Autocomplete, for example withinPortal:

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

function Demo() {
  return <Autocomplete comboboxProps={{ withinPortal: false }} data={[]} />;
}

Input props

Autocomplete component supports Input and Input.Wrapper components features and all input element props. Autocomplete documentation does not include all features supported by the component – see Input documentation to learn about all available features.

Input description

Variant
Size
Radius
import { Autocomplete } from '@mantine/core';

function Demo() {
  return (
    <Autocomplete
      label="Input label"
      description="Input description"
      placeholder="Autocomplete placeholder"
      data={['React', 'Angular', 'Vue', 'Svelte']}
    />
  );
}

Read only

Set readOnly to make the input read only. When readOnly is set, Autocomplete will not show suggestions and will not call onChange function.

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

function Demo() {
  return (
    <Autocomplete
      label="Your favorite library"
      placeholder="Pick value or enter anything"
      data={['React', 'Angular', 'Vue', 'Svelte']}
      readOnly
    />
  );
}

Disabled

Set disabled to disable the input. When disabled is set, user cannot interact with the input and Autocomplete will not show suggestions.

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

function Demo() {
  return (
    <Autocomplete
      label="Your favorite library"
      placeholder="Pick value or enter anything"
      data={['React', 'Angular', 'Vue', 'Svelte']}
      disabled
    />
  );
}

Error state

Invalid name

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

function Demo() {
  return (
    <>
      <Autocomplete
        label="Boolean error"
        placeholder="Boolean error"
        error
        data={['React', 'Angular', 'Vue', 'Svelte']}
      />
      <Autocomplete
        mt="md"
        label="With error message"
        placeholder="With error message"
        error="Invalid name"
        data={['React', 'Angular', 'Vue', 'Svelte']}
      />
    </>
  );
}

Styles API

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

Description

Component Styles API

Hover over selectors to highlight corresponding elements

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

Get element ref

import { useRef } from 'react';
import { Autocomplete } from '@mantine/core';

function Demo() {
  const ref = useRef<HTMLInputElement>(null);
  return <Autocomplete ref={ref} />;
}

Accessibility

If Autocomplete is used without label prop, it will not be announced properly by screen reader:

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

// Inaccessible input – screen reader will not announce it properly
function Demo() {
  return <Autocomplete />;
}

Set aria-label to make the input accessible. In this case label will not be visible, but screen reader will announce it:

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

// Accessible input – it has aria-label
function Demo() {
  return <Autocomplete aria-label="My input" />;
}

If label prop is set, input will be accessible it is not required to set aria-label:

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

// Accessible input – it has associated label element
function Demo() {
  return <Autocomplete label="My input" />;
}

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