# NumberField · HeroUI

> Number input fields with increment/decrement buttons, validation, and internationalized formatting

- Page: https://jiguang132.com/systems/heroui/docs/components/number-field
- Based on: HeroUI documentation (Apache-2.0) @ 60edd8ed751b1d2a270623fbb182bbcfa8baa9af

## Import

```tsx
import { NumberField } from '@heroui/react';
```

### Usage


> Example `number-field-basic`: interactive preview on https://jiguang132.com/systems/heroui/docs/components/number-field


### Anatomy

```tsx
import {NumberField, Label, Description, FieldError} from '@heroui/react';

export default () => (
  <NumberField>
    <Label />
    <NumberField.Group>
      <NumberField.DecrementButton />
      <NumberField.Input />
      <NumberField.IncrementButton />
    </NumberField.Group>
    <Description />
    <FieldError />
  </NumberField>
)
```

> **NumberField** allows users to enter numeric values with optional increment/decrement buttons. It supports internationalized formatting, validation, and keyboard navigation.

### With Description


> Example `number-field-with-description`: interactive preview on https://jiguang132.com/systems/heroui/docs/components/number-field


### Required Field


> Example `number-field-required`: interactive preview on https://jiguang132.com/systems/heroui/docs/components/number-field


### Validation

Use `isInvalid` together with `FieldError` to surface validation messages.


> Example `number-field-validation`: interactive preview on https://jiguang132.com/systems/heroui/docs/components/number-field


### Controlled

Control the value to synchronize with other components or perform custom formatting.


> Example `number-field-controlled`: interactive preview on https://jiguang132.com/systems/heroui/docs/components/number-field


### With Validation

Implement custom validation logic with controlled values.


> Example `number-field-with-validation`: interactive preview on https://jiguang132.com/systems/heroui/docs/components/number-field


### Step Values

Configure increment/decrement step values for precise control.


> Example `number-field-with-step`: interactive preview on https://jiguang132.com/systems/heroui/docs/components/number-field


### Format Options

Format numbers as currency, percentages, decimals, or units with internationalization support.


> Example `number-field-with-format-options`: interactive preview on https://jiguang132.com/systems/heroui/docs/components/number-field


### Custom Icons

Customize the increment and decrement button icons.


> Example `number-field-custom-icons`: interactive preview on https://jiguang132.com/systems/heroui/docs/components/number-field


### With Chevrons

Use chevron icons in a vertical layout for a different visual style.


> Example `number-field-with-chevrons`: interactive preview on https://jiguang132.com/systems/heroui/docs/components/number-field


### Disabled State


> Example `number-field-disabled`: interactive preview on https://jiguang132.com/systems/heroui/docs/components/number-field


### Full Width


> Example `number-field-full-width`: interactive preview on https://jiguang132.com/systems/heroui/docs/components/number-field


### Variants

The NumberField component supports two visual variants:

- **`primary`** (default) - Standard styling with shadow, suitable for most use cases
- **`secondary`** - Lower emphasis variant without shadow, suitable for use in Surface components


> Example `number-field-variants`: interactive preview on https://jiguang132.com/systems/heroui/docs/components/number-field


### In Surface

When used inside a [Surface](/systems/heroui/docs/components/surface) component, use `variant="secondary"` to apply the lower emphasis variant suitable for surface backgrounds.


> Example `number-field-on-surface`: interactive preview on https://jiguang132.com/systems/heroui/docs/components/number-field


### Form Example

Complete form integration with validation and submission handling.


> Example `number-field-form-example`: interactive preview on https://jiguang132.com/systems/heroui/docs/components/number-field


### Custom Render Function


> Example `number-field-custom-render-function`: interactive preview on https://jiguang132.com/systems/heroui/docs/components/number-field


## Styling

### Passing Tailwind CSS classes

```tsx
import {NumberField, Label} from '@heroui/react';

function CustomNumberField() {
  return (
    <NumberField className="gap-2">
      <Label className="text-sm font-semibold">Quantity</Label>
      <NumberField.Group className="rounded-xl border-2">
        <NumberField.DecrementButton className="bg-gray-100" />
        <NumberField.Input className="text-center font-bold" />
        <NumberField.IncrementButton className="bg-gray-100" />
      </NumberField.Group>
    </NumberField>
  );
}
```

### Customizing the component classes

NumberField uses CSS classes that can be customized. Override the component classes to match your design system.

```css
@layer components {
  .number-field {
    @apply flex flex-col gap-1;
  }

  /* When invalid, the description is hidden automatically */
  .number-field[data-invalid="true"] [data-slot="description"],
  .number-field[aria-invalid="true"] [data-slot="description"] {
    @apply hidden;
  }

  .number-field__group {
    @apply bg-field text-field-foreground shadow-field rounded-field inline-flex h-9 items-center overflow-hidden border;
  }

  .number-field__input {
    @apply flex-1 rounded-none border-0 bg-transparent px-3 py-2 tabular-nums;
  }

  .number-field__increment-button,
  .number-field__decrement-button {
    @apply flex h-full w-10 items-center justify-center rounded-none bg-transparent;
  }
}
```

### CSS Classes

- `.number-field` – Root container with minimal styling (`flex flex-col gap-1`)
- `.number-field__group` – Container for input and buttons with border and background styling
- `.number-field__input` – The numeric input field
- `.number-field__increment-button` – Button to increment the value
- `.number-field__decrement-button` – Button to decrement the value
- `.number-field--primary` – Primary variant with shadow (default)
- `.number-field--secondary` – Secondary variant without shadow, suitable for use in surfaces

> **Note:** Child components ([Label](/systems/heroui/docs/components/label), [Description](/systems/heroui/docs/components/description), [FieldError](/systems/heroui/docs/components/field-error)) have their own CSS classes and styling. See their respective documentation for customization options.

### Interactive States

NumberField automatically manages these data attributes based on its state:

- **Invalid**: `[data-invalid="true"]` or `[aria-invalid="true"]` - Automatically hides the description slot when invalid
- **Disabled**: `[data-disabled="true"]` - Applied when `isDisabled` is true
- **Focus Within**: `[data-focus-within="true"]` - Applied when the input or buttons are focused
- **Focus Visible**: `[data-focus-visible="true"]` - Applied when focus is visible (keyboard navigation)
- **Hovered**: `[data-hovered="true"]` - Applied when hovering over buttons

Additional attributes are available through render props (see NumberFieldRenderProps below).

## API Reference

### NumberField Props

NumberField inherits all props from React Aria's [NumberField](https://react-spectrum.adobe.com/react-aria/NumberField.html) component.

#### Base Props

| Prop | Type | Default | Description |
|------|------|---------|-------------|
| `children` | `React.ReactNode \| (values: NumberFieldRenderProps) => React.ReactNode` | - | Child components (Label, Group, Input, etc.) or render function. |
| `className` | `string \| (values: NumberFieldRenderProps) => string` | - | CSS classes for styling, supports render props. |
| `style` | `React.CSSProperties \| (values: NumberFieldRenderProps) => React.CSSProperties` | - | Inline styles, supports render props. |
| `fullWidth` | `boolean` | `false` | Whether the number field should take full width of its container |
| `id` | `string` | - | The element's unique identifier. |
| `variant` | `"primary" \| "secondary"` | `"primary"` | Visual variant of the component. `primary` is the default style with shadow. `secondary` is a lower emphasis variant without shadow, suitable for use in surfaces. |
| `render` | `DOMRenderFunction<keyof React.JSX.IntrinsicElements, NumberFieldRenderProps>` | - | Overrides the default DOM element with a custom render function.|

#### Value Props

| Prop | Type | Default | Description |
|------|------|---------|-------------|
| `value` | `number` | - | Current value (controlled). |
| `defaultValue` | `number` | - | Default value (uncontrolled). |
| `onChange` | `(value: number \| undefined) => void` | - | Handler called when the value changes. |

#### Formatting Props

| Prop | Type | Default | Description |
|------|------|---------|-------------|
| `formatOptions` | `Intl.NumberFormatOptions` | - | Options for formatting numbers (currency, percent, decimal, unit). |
| `locale` | `string` | - | Locale for number formatting. |

#### Validation Props

| Prop | Type | Default | Description |
|------|------|---------|-------------|
| `isRequired` | `boolean` | `false` | Whether user input is required before form submission. |
| `isInvalid` | `boolean` | - | Whether the value is invalid. |
| `validate` | `(value: number) => ValidationError \| true \| null \| undefined` | - | Custom validation function. |
| `validationBehavior` | `'native' \| 'aria'` | `'native'` | Whether to use native HTML form validation or ARIA attributes. |
| `validationErrors` | `string[]` | - | Server-side validation errors. |

#### Range Props

| Prop | Type | Default | Description |
|------|------|---------|-------------|
| `minValue` | `number` | - | Minimum allowed value. |
| `maxValue` | `number` | - | Maximum allowed value. |
| `step` | `number` | `1` | Step value for increment/decrement operations. |

#### State Props

| Prop | Type | Default | Description |
|------|------|---------|-------------|
| `isDisabled` | `boolean` | - | Whether the input is disabled. |
| `isReadOnly` | `boolean` | - | Whether the input can be selected but not changed. |

#### Form Props

| Prop | Type | Default | Description |
|------|------|---------|-------------|
| `name` | `string` | - | Name of the input element, for HTML form submission. |
| `autoFocus` | `boolean` | - | Whether the element should receive focus on render. |

#### Accessibility Props

| Prop | Type | Default | Description |
|------|------|---------|-------------|
| `aria-label` | `string` | - | Accessibility label when no visible label is present. |
| `aria-labelledby` | `string` | - | ID of elements that label this field. |
| `aria-describedby` | `string` | - | ID of elements that describe this field. |
| `aria-details` | `string` | - | ID of elements with additional details. |

### Composition Components

NumberField works with these separate components that should be imported and used directly:

- **NumberField.Group** - Container for input and buttons
- **NumberField.Input** - The numeric input field
- **NumberField.IncrementButton** - Button to increment the value
- **NumberField.DecrementButton** - Button to decrement the value
- **Label** - Field label component from `@heroui/react`
- **Description** - Helper text component from `@heroui/react`
- **FieldError** - Validation error message from `@heroui/react`

Each of these components has its own props API. Use them directly within NumberField for composition:

```tsx
<NumberField isRequired isInvalid={hasError} minValue={0} maxValue={100}>
  <Label>Quantity</Label>
  <NumberField.Group>
    <NumberField.DecrementButton />
    <NumberField.Input />
    <NumberField.IncrementButton />
  </NumberField.Group>
  <Description>Enter a value between 0 and 100</Description>
  <FieldError>Value must be between 0 and 100</FieldError>
</NumberField>
```

#### NumberField.Group Props

NumberField.Group inherits props from React Aria's [Group](https://react-spectrum.adobe.com/react-aria/Group.html) component.

| Prop | Type | Default | Description |
|------|------|---------|-------------|
| `children` | `React.ReactNode \| (values: GroupRenderProps) => React.ReactNode` | - | Child components (Input, Buttons) or render function. |
| `className` | `string \| (values: GroupRenderProps) => string` | - | CSS classes for styling. |

#### NumberField.Input Props

NumberField.Input inherits props from React Aria's [Input](https://react-spectrum.adobe.com/react-aria/Input.html) component.

| Prop | Type | Default | Description |
|------|------|---------|-------------|
| `className` | `string` | - | CSS classes for styling. |
| `variant` | `"primary" \| "secondary"` | `"primary"` | Visual variant of the input. `primary` is the default style with shadow. `secondary` is a lower emphasis variant without shadow, suitable for use in surfaces. |

#### NumberField.IncrementButton Props

NumberField.IncrementButton inherits props from React Aria's [Button](https://react-spectrum.adobe.com/react-aria/Button.html) component.

| Prop | Type | Default | Description |
|------|------|---------|-------------|
| `children` | `React.ReactNode` | `` | Icon or content for the button. Defaults to plus icon. |
| `className` | `string` | - | CSS classes for styling. |
| `slot` | `"increment"` | `"increment"` | Must be set to "increment" (automatically set). |

#### NumberField.DecrementButton Props

NumberField.DecrementButton inherits props from React Aria's [Button](https://react-spectrum.adobe.com/react-aria/Button.html) component.

| Prop | Type | Default | Description |
|------|------|---------|-------------|
| `children` | `React.ReactNode` | `` | Icon or content for the button. Defaults to minus icon. |
| `className` | `string` | - | CSS classes for styling. |
| `slot` | `"decrement"` | `"decrement"` | Must be set to "decrement" (automatically set). |

### NumberFieldRenderProps

When using render props with `className`, `style`, or `children`, these values are available:

| Prop | Type | Description |
|------|------|-------------|
| `isDisabled` | `boolean` | Whether the field is disabled. |
| `isInvalid` | `boolean` | Whether the field is currently invalid. |
| `isReadOnly` | `boolean` | Whether the field is read-only. |
| `isRequired` | `boolean` | Whether the field is required. |
| `isFocused` | `boolean` | Whether the field is currently focused (DEPRECATED - use `isFocusWithin`). |
| `isFocusWithin` | `boolean` | Whether any child element is focused. |
| `isFocusVisible` | `boolean` | Whether focus is visible (keyboard navigation). |
| `value` | `number \| undefined` | Current value. |
| `minValue` | `number \| undefined` | Minimum allowed value. |
| `maxValue` | `number \| undefined` | Maximum allowed value. |
| `step` | `number` | Step value for increment/decrement. |

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Index of all JGuang resources: https://jiguang132.com/llms.txt