NumberField

NumberFields allow users to enter a number, and increment or decrement the value using stepper buttons.

install	`yarn add @adobe/react-spectrum`
added	3.10.0
usage	`import {NumberField} from '@adobe/react-spectrum'`

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GitHub

View package

NPM

Example#

<NumberField label="Width" defaultValue={1024} minValue={0} />

<NumberField
  label="Width"
  defaultValue={1024}
  minValue={0}
/>

<NumberField
  label="Width"
  defaultValue={1024}
  minValue={0}
/>

Value#

A NumberField's value is empty by default, but an initial, uncontrolled, value can be provided using the defaultValue prop. Alternatively, a controlled value can be provided using the value prop.

function Example() {
  let [value, setValue] = React.useState(15);

  return (
    <Flex gap="size-150" wrap>
      <NumberField
        label="Cookies (Uncontrolled)"
        defaultValue={15}
        minValue={0} />

      <NumberField
        label="Cookies (Controlled)"
        value={value}
        onChange={setValue}
        minValue={0} />
    </Flex>
  );
}

function Example() {
  let [value, setValue] = React.useState(15);

  return (
    <Flex gap="size-150" wrap>
      <NumberField
        label="Cookies (Uncontrolled)"
        defaultValue={15}
        minValue={0} />

      <NumberField
        label="Cookies (Controlled)"
        value={value}
        onChange={setValue}
        minValue={0} />
    </Flex>
  );
}

function Example() {
  let [value, setValue] =
    React.useState(15);

  return (
    <Flex
      gap="size-150"
      wrap
    >
      <NumberField
        label="Cookies (Uncontrolled)"
        defaultValue={15}
        minValue={0}
      />

      <NumberField
        label="Cookies (Controlled)"
        value={value}
        onChange={setValue}
        minValue={0}
      />
    </Flex>
  );
}

Labeling#

A visual label should be provided for the NumberField using the label prop. If the NumberField is required, the isRequired and necessityIndicator props can be used to show a required state.

<Flex gap="size-150" wrap>
  <NumberField label="Cookies" minValue={0} />
  <NumberField
    label="Cookies"
    isRequired
    necessityIndicator="icon"
    minValue={0}
  />
  <NumberField
    label="Cookies"
    isRequired
    necessityIndicator="label"
    minValue={0}
  />
  <NumberField label="Cookies" necessityIndicator="label" minValue={0} />
</Flex>

<Flex gap="size-150" wrap>
  <NumberField label="Cookies" minValue={0} />
  <NumberField
    label="Cookies"
    isRequired
    necessityIndicator="icon"
    minValue={0}
  />
  <NumberField
    label="Cookies"
    isRequired
    necessityIndicator="label"
    minValue={0}
  />
  <NumberField
    label="Cookies"
    necessityIndicator="label"
    minValue={0}
  />
</Flex>

<Flex
  gap="size-150"
  wrap
>
  <NumberField
    label="Cookies"
    minValue={0}
  />
  <NumberField
    label="Cookies"
    isRequired
    necessityIndicator="icon"
    minValue={0}
  />
  <NumberField
    label="Cookies"
    isRequired
    necessityIndicator="label"
    minValue={0}
  />
  <NumberField
    label="Cookies"
    necessityIndicator="label"
    minValue={0}
  />
</Flex>

Accessibility#

If a visible label isn't specified, an aria-label must be provided to the NumberField for accessibility. If the field is labeled by a separate element, an aria-labelledby prop must be provided using the id of the labeling element instead.

Internationalization#

In order to internationalize a NumberField, a localized string should be passed to the label or aria-label prop. When the necessityIndicator prop is set to "label", a localized string will be provided for "(required)" or "(optional)" automatically.

Number formatting#

The NumberField value can be formatted by using the formatOptions prop. formatOptions is compatible with the option parameter of Intl.NumberFormat and is applied based on the current locale. Currently only standard notation is supported, though scientific, engineering, and compact notation may be supported in the future.

NumberField supports three numeral systems; Latin, Arabic-Indic, and Han positional decimal. Regardless of the locale, these three can be parsed from typed input. Initial rendering will appear in the default numeral system for the locale unless explicitly overridden.

Decimals#

The following example uses the signDisplay option to include the plus sign for positive numbers, for example to display an offset from some value. In addition, it always displays a minimum of 1 digit after the decimal point, and allows up to 2 fraction digits. If the user enters more than 2 fraction digits, the result will be rounded.

<NumberField
  label="Adjust exposure"
  formatOptions={{
    signDisplay: 'exceptZero',
    minimumFractionDigits: 1,
    maximumFractionDigits: 2
  }}
  defaultValue={0} />

<NumberField
  label="Adjust exposure"
  formatOptions={{
    signDisplay: 'exceptZero',
    minimumFractionDigits: 1,
    maximumFractionDigits: 2
  }}
  defaultValue={0} />

<NumberField
  label="Adjust exposure"
  formatOptions={{
    signDisplay:
      'exceptZero',
    minimumFractionDigits:
      1,
    maximumFractionDigits:
      2
  }}
  defaultValue={0}
/>

Percentages#

The style: 'percent' option can be passed to the formatOptions prop to treat the value as a percentage. In this mode, the value is multiplied by 100 before it is displayed, i.e. 0.45 is displayed as 45%. The reverse is also true: when the user enters a value, the onChange event will be triggered with the entered value divided by 100. When the percent option is enabled, the default step automatically changes to 0.01 such that incrementing and decrementing occurs by 1%. This can be overridden with the step prop. See below for details.

<NumberField
  label="Sales tax"
  formatOptions={{style: 'percent'}}
  minValue={0}
  defaultValue={0.05} />

<NumberField
  label="Sales tax"
  formatOptions={{style: 'percent'}}
  minValue={0}
  defaultValue={0.05} />

<NumberField
  label="Sales tax"
  formatOptions={{
    style: 'percent'
  }}
  minValue={0}
  defaultValue={0.05}
/>

Currency values#

The style: 'currency' option can be passed to the formatOptions prop to treat the value as a currency value. The currency option must also be passed to set the currency code (e.g. USD) to use. In addition, the currencyDisplay option can be used to choose whether to display the currency symbol, currency code, or currency name. Finally, the currencySign option can be set to accounting to use accounting notation for negative numbers, which uses parentheses rather than a minus sign in some locales.

If you need to allow the user to change the currency, you should include a separate dropdown next to the NumberField. The NumberField itself will not determine the currency from the user input.

<NumberField
  label="Transaction amount"
  defaultValue={45}
  formatOptions={{
    style: 'currency',
    currency: 'EUR',
    currencyDisplay: 'code',
    currencySign: 'accounting'
  }} />

<NumberField
  label="Transaction amount"
  defaultValue={45}
  formatOptions={{
    style: 'currency',
    currency: 'EUR',
    currencyDisplay: 'code',
    currencySign: 'accounting'
  }} />

<NumberField
  label="Transaction amount"
  defaultValue={45}
  formatOptions={{
    style: 'currency',
    currency: 'EUR',
    currencyDisplay:
      'code',
    currencySign:
      'accounting'
  }}
/>

Units#

The style: 'unit' option can be passed to the formatOptions prop to format the value with a unit of measurement. The unit option must also be passed to set which unit to use (e.g. inch). In addition, the unitDisplay option can be used to choose whether to display the unit in long, short, or narrow format.

If you need to allow the user to change the unit, you should include a separate dropdown next to the number field. The number field itself will not determine the unit from the user input.

Note: The unit style is not currently supported in Safari. A polyfill may be necessary.

<NumberField
  label="Package width"
  defaultValue={4}
  minValue={0}
  formatOptions={{
    style: 'unit',
    unit: 'inch',
    unitDisplay: 'long'
  }} />

<NumberField
  label="Package width"
  defaultValue={4}
  minValue={0}
  formatOptions={{
    style: 'unit',
    unit: 'inch',
    unitDisplay: 'long'
  }} />

<NumberField
  label="Package width"
  defaultValue={4}
  minValue={0}
  formatOptions={{
    style: 'unit',
    unit: 'inch',
    unitDisplay: 'long'
  }} />

Minimum and maximum values#

The minValue and maxValue props can be used to limit the entered value to a specific range. The value will be clamped when the user blurs the input field. In addition, the increment and decrement buttons will be disabled when the value is within one step value from the bounds (see below for info about steps). Ranges can be open ended by only providing either minValue or maxValue rather than both.

If a valid range is known ahead of time, it is a good idea to provide it to NumberField so it can optimize the experience. For example, when the minimum value is greater than or equal to zero, it is possible to use a numeric keyboard on iOS rather than a full text keyboard (necessary to enter a minus sign).

<NumberField
  label="Enter your age"
  minValue={0} />

<NumberField
  label="Enter your age"
  minValue={0} />

<NumberField
  label="Enter your age"
  minValue={0} />

Step values#

The step prop can be used to snap the value to certain increments. If there is a minValue defined, the steps are calculated starting from the minimum. For example, if minValue={2}, and step={3}, the valid step values would be 2, 5, 8, 11, etc. If no minValue is defined, the steps are calculated starting from zero and extending in both directions. In other words, such that the values are evenly divisible by the step. A step can be any positive decimal. If no step is defined, any decimal value may be typed, but incrementing and decrementing snaps the value to an integer.

If the user types a value that is between two steps and blurs the input, the value will be snapped to the nearest step. When incrementing or decrementing, the value is snapped to the nearest step that is higher or lower, respectively. When incrementing or decrementing from an empty field, the value starts at the minValue or maxValue, respectively, if defined. Otherwise, the value starts from 0.

<Flex direction="column" gap="size-150">
  <NumberField
    label="Step"
    step={10} />
  <NumberField
    label="Step + minValue"
    minValue={2}
    step={3} />
  <NumberField
    label="Step + minValue + maxValue"
    minValue={2}
    maxValue={21}
    step={3} />
</Flex>

<Flex direction="column" gap="size-150">
  <NumberField
    label="Step"
    step={10} />
  <NumberField
    label="Step + minValue"
    minValue={2}
    step={3} />
  <NumberField
    label="Step + minValue + maxValue"
    minValue={2}
    maxValue={21}
    step={3} />
</Flex>

<Flex
  direction="column"
  gap="size-150"
>
  <NumberField
    label="Step"
    step={10}
  />
  <NumberField
    label="Step + minValue"
    minValue={2}
    step={3}
  />
  <NumberField
    label="Step + minValue + maxValue"
    minValue={2}
    maxValue={21}
    step={3}
  />
</Flex>

Events#

NumberField accepts an onChange prop which is triggered whenever the value is committed by the user. This happens on blur of the field or on interaction with the stepper functionality, arrow keys or stepper buttons. For a full list of supported events, see the Props table below.

The example below uses onChange to update a separate pre element with the same values entered into the NumberField.

function Example() {
  let [value, setValue] = React.useState(null);

  return (
    <Flex direction="column" gap="size-150">
      <NumberField
        onChange={setValue}
        label="Number of cookies to buy"
        minValue={0} />
      <pre>How many cookies you are ordering: {isNaN(value) ? 0 : value}</pre>
    </Flex>
  );
}

function Example() {
  let [value, setValue] = React.useState(null);

  return (
    <Flex direction="column" gap="size-150">
      <NumberField
        onChange={setValue}
        label="Number of cookies to buy"
        minValue={0}
      />
      <pre>How many cookies you are ordering: {isNaN(value) ? 0 : value}</pre>
    </Flex>
  );
}

function Example() {
  let [value, setValue] =
    React.useState(null);

  return (
    <Flex
      direction="column"
      gap="size-150"
    >
      <NumberField
        onChange={setValue}
        label="Number of cookies to buy"
        minValue={0}
      />
      <pre>How many cookies you are ordering: {isNaN(value) ? 0 : value}</pre>
    </Flex>
  );
}

Validation#

NumberFields can display a validation state to communicate to the user whether the current value is valid or invalid. Implement your own validation logic in your app and pass either "valid" or "invalid" to the NumberField via the validationState prop.

The example below illustrates how one would validate if the user has entered a FizzBuzz number into the NumberField.

function Example() {
  let [value, setValue] = React.useState(15);
  let isValid = React.useMemo(() => value % 3 === 0 && value % 5 === 0, [
    value
  ]);

  return (
    <NumberField
      validationState={isValid ? 'valid' : 'invalid'}
      value={value}
      onChange={setValue}
      label="FizzBuzz values only"
    />
  );
}

function Example() {
  let [value, setValue] = React.useState(15);
  let isValid = React.useMemo(
    () => value % 3 === 0 && value % 5 === 0,
    [value]
  );

  return (
    <NumberField
      validationState={isValid ? 'valid' : 'invalid'}
      value={value}
      onChange={setValue}
      label="FizzBuzz values only"
    />
  );
}

function Example() {
  let [value, setValue] =
    React.useState(15);
  let isValid = React
    .useMemo(
      () =>
        value % 3 ===
          0 &&
        value % 5 === 0,
      [value]
    );

  return (
    <NumberField
      validationState={isValid
        ? 'valid'
        : 'invalid'}
      value={value}
      onChange={setValue}
      label="FizzBuzz values only"
    />
  );
}

Props#

Name	Type	Default	Description
`isQuiet`	`boolean`	—	Whether the numberfield should be displayed with a quiet style.
`hideStepper`	`boolean`	—	Whether to hide the increment and decrement buttons.
`decrementAriaLabel`	`string`	—	A custom aria-label for the decrement button. If not provided, the localized string "Decrement" is used.
`incrementAriaLabel`	`string`	—	A custom aria-label for the increment button. If not provided, the localized string "Increment" is used.
`formatOptions`	`Intl.NumberFormatOptions`	—	Formatting options for the value displayed in the number field. This also affects what characters are allowed to be typed by the user.
`isDisabled`	`boolean`	—	Whether the input is disabled.
`isReadOnly`	`boolean`	—	Whether the input can be selected but not changed by the user.
`validationState`	`ValidationState`	—	Whether the input should display its "valid" or "invalid" visual styling.
`isRequired`	`boolean`	—	Whether user input is required on the input before form submission. Often paired with the `necessityIndicator` prop to add a visual indicator to the input.
`autoFocus`	`boolean`	—	Whether the element should receive focus on render.
`value`	`number`	—	The current value (controlled).
`defaultValue`	`number`	—	The default value (uncontrolled).
`minValue`	`number`	—	The smallest value allowed for the input.
`maxValue`	`number`	—	The largest value allowed for the input.
`step`	`number`	—	The amount that the input value changes with each increment or decrement "tick".
`label`	`ReactNode`	—	The content to display as the label.
`description`	`ReactNode`	—	A description for the field. Provides a hint such as specific requirements for what to choose.
`errorMessage`	`ReactNode`	—	An error message for the field.
`labelPosition`	`LabelPosition`	`'top'`	The label's overall position relative to the element it is labeling.
`labelAlign`	`Alignment`	`'start'`	The label's horizontal alignment relative to the element it is labeling.
`necessityIndicator`	`NecessityIndicator`	`'icon'`	Whether the required state should be shown as an icon or text.
`contextualHelp`	`ReactNode`	—	A ContextualHelp element to place next to the label.

Events

Name	Type	Default	Description
`onFocus`	`( (e: FocusEvent<Target> )) => void`	—	Handler that is called when the element receives focus.
`onBlur`	`( (e: FocusEvent<Target> )) => void`	—	Handler that is called when the element loses focus.
`onFocusChange`	`( (isFocused: boolean )) => void`	—	Handler that is called when the element's focus status changes.
`onKeyDown`	`( (e: KeyboardEvent )) => void`	—	Handler that is called when a key is pressed.
`onKeyUp`	`( (e: KeyboardEvent )) => void`	—	Handler that is called when a key is released.
`onChange`	`( (value: T )) => void`	—	Handler that is called when the value changes.
`onCopy`	`ClipboardEventHandler<HTMLInputElement>`	—	Handler that is called when the user copies text. See MDN.
`onCut`	`ClipboardEventHandler<HTMLInputElement>`	—	Handler that is called when the user cuts text. See MDN.
`onPaste`	`ClipboardEventHandler<HTMLInputElement>`	—	Handler that is called when the user pastes text. See MDN.
`onCompositionStart`	`CompositionEventHandler<HTMLInputElement>`	—	Handler that is called when a text composition system starts a new text composition session. See MDN.
`onCompositionEnd`	`CompositionEventHandler<HTMLInputElement>`	—	Handler that is called when a text composition system completes or cancels the current text composition session. See MDN.
`onCompositionUpdate`	`CompositionEventHandler<HTMLInputElement>`	—	Handler that is called when a new character is received in the current text composition session. See MDN.
`onSelect`	`ReactEventHandler<HTMLInputElement>`	—	Handler that is called when text in the input is selected. See MDN.
`onBeforeInput`	`FormEventHandler<HTMLInputElement>`	—	Handler that is called when the input value is about to be modified. See MDN.
`onInput`	`FormEventHandler<HTMLInputElement>`	—	Handler that is called when the input value is modified. See MDN.

Layout

Name	Type	Default	Description
`flex`	`Responsive<string \| number \| boolean>`	—	When used in a flex layout, specifies how the element will grow or shrink to fit the space available. See MDN.
`flexGrow`	`Responsive<number>`	—	When used in a flex layout, specifies how the element will grow to fit the space available. See MDN.
`flexShrink`	`Responsive<number>`	—	When used in a flex layout, specifies how the element will shrink to fit the space available. See MDN.
`flexBasis`	`Responsive<number \| string>`	—	When used in a flex layout, specifies the initial main size of the element. See MDN.
`alignSelf`	`Responsive<'auto' \| 'normal' \| 'start' \| 'end' \| 'center' \| 'flex-start' \| 'flex-end' \| 'self-start' \| 'self-end' \| 'stretch'>`	—	Overrides the `alignItems` property of a flex or grid container. See MDN.
`justifySelf`	`Responsive<'auto' \| 'normal' \| 'start' \| 'end' \| 'flex-start' \| 'flex-end' \| 'self-start' \| 'self-end' \| 'center' \| 'left' \| 'right' \| 'stretch'>`	—	Specifies how the element is justified inside a flex or grid container. See MDN.
`order`	`Responsive<number>`	—	The layout order for the element within a flex or grid container. See MDN.
`gridArea`	`Responsive<string>`	—	When used in a grid layout, specifies the named grid area that the element should be placed in within the grid. See MDN.
`gridColumn`	`Responsive<string>`	—	When used in a grid layout, specifies the column the element should be placed in within the grid. See MDN.
`gridRow`	`Responsive<string>`	—	When used in a grid layout, specifies the row the element should be placed in within the grid. See MDN.
`gridColumnStart`	`Responsive<string>`	—	When used in a grid layout, specifies the starting column to span within the grid. See MDN.
`gridColumnEnd`	`Responsive<string>`	—	When used in a grid layout, specifies the ending column to span within the grid. See MDN.
`gridRowStart`	`Responsive<string>`	—	When used in a grid layout, specifies the starting row to span within the grid. See MDN.
`gridRowEnd`	`Responsive<string>`	—	When used in a grid layout, specifies the ending row to span within the grid. See MDN.

Spacing

Name	Type	Default	Description
`margin`	`Responsive<DimensionValue>`	—	The margin for all four sides of the element. See MDN.
`marginTop`	`Responsive<DimensionValue>`	—	The margin for the top side of the element. See MDN.
`marginBottom`	`Responsive<DimensionValue>`	—	The margin for the bottom side of the element. See MDN.
`marginStart`	`Responsive<DimensionValue>`	—	The margin for the logical start side of the element, depending on layout direction. See MDN.
`marginEnd`	`Responsive<DimensionValue>`	—	The margin for the logical end side of an element, depending on layout direction. See MDN.
`marginX`	`Responsive<DimensionValue>`	—	The margin for both the left and right sides of the element. See MDN.
`marginY`	`Responsive<DimensionValue>`	—	The margin for both the top and bottom sides of the element. See MDN.

Sizing

Name	Type	Default	Description
`width`	`Responsive<DimensionValue>`	—	The width of the element. See MDN.
`minWidth`	`Responsive<DimensionValue>`	—	The minimum width of the element. See MDN.
`maxWidth`	`Responsive<DimensionValue>`	—	The maximum width of the element. See MDN.
`height`	`Responsive<DimensionValue>`	—	The height of the element. See MDN.
`minHeight`	`Responsive<DimensionValue>`	—	The minimum height of the element. See MDN.
`maxHeight`	`Responsive<DimensionValue>`	—	The maximum height of the element. See MDN.

Positioning

Name	Type	Default	Description
`position`	`Responsive<'static' \| 'relative' \| 'absolute' \| 'fixed' \| 'sticky'>`	—	Specifies how the element is positioned. See MDN.
`top`	`Responsive<DimensionValue>`	—	The top position for the element. See MDN.
`bottom`	`Responsive<DimensionValue>`	—	The bottom position for the element. See MDN.
`left`	`Responsive<DimensionValue>`	—	The left position for the element. See MDN. Consider using `start` instead for RTL support.
`right`	`Responsive<DimensionValue>`	—	The right position for the element. See MDN. Consider using `start` instead for RTL support.
`start`	`Responsive<DimensionValue>`	—	The logical start position for the element, depending on layout direction. See MDN.
`end`	`Responsive<DimensionValue>`	—	The logical end position for the element, depending on layout direction. See MDN.
`zIndex`	`Responsive<number>`	—	The stacking order for the element. See MDN.
`isHidden`	`Responsive<boolean>`	—	Hides the element.

Accessibility

Name	Type	Default	Description
`id`	`string`	—	The element's unique identifier. See MDN.
`aria-label`	`string`	—	Defines a string value that labels the current element.
`aria-labelledby`	`string`	—	Identifies the element (or elements) that labels the current element.
`aria-describedby`	`string`	—	Identifies the element (or elements) that describes the object.
`aria-details`	`string`	—	Identifies the element (or elements) that provide a detailed, extended description for the object.

Advanced

Name	Type	Default	Description
`UNSAFE_className`	`string`	—	Sets the CSS className for the element. Only use as a last resort. Use style props instead.
`UNSAFE_style`	`CSSProperties`	—	Sets inline style for the element. Only use as a last resort. Use style props instead.

Visual options#

Quiet#

<NumberField label="Cookies" isQuiet minValue={0} />

<NumberField label="Cookies" isQuiet minValue={0} />

<NumberField
  label="Cookies"
  isQuiet
  minValue={0}
/>

Hidden Steppers#

NumberField stepper buttons are optional.

<NumberField label="Cookies" hideStepper minValue={0} />

<NumberField label="Cookies" hideStepper minValue={0} />

<NumberField
  label="Cookies"
  hideStepper
  minValue={0}
/>

Disabled#

<NumberField label="Cookies" isDisabled minValue={0} />

<NumberField label="Cookies" isDisabled minValue={0} />

<NumberField
  label="Cookies"
  isDisabled
  minValue={0}
/>

Read only#

The isReadOnly boolean prop makes the NumberField's text content immutable. Unlike isDisabled, the NumberField remains focusable and the contents can still be copied. See the MDN docs for more information.

<NumberField label="Cookies" defaultValue={15} isReadOnly minValue={0} />

<NumberField
  label="Cookies"
  defaultValue={15}
  isReadOnly
  minValue={0}
/>

<NumberField
  label="Cookies"
  defaultValue={15}
  isReadOnly
  minValue={0}
/>

Label alignment and position#

View guidelines

By default, the label is positioned above the NumberField. The labelPosition prop can be used to position the label to the side. The labelAlign prop can be used to align the label as "start" or "end". For left-to-right (LTR) languages, "start" refers to the left most edge of the NumberField and "end" refers to the right most edge. For right-to-left (RTL) languages, this is flipped.

<NumberField
  label="Cookies"
  labelPosition="side"
  labelAlign="end"
  minValue={0}
/>

<NumberField
  label="Cookies"
  labelPosition="side"
  labelAlign="end"
  minValue={0}
/>

<NumberField
  label="Cookies"
  labelPosition="side"
  labelAlign="end"
  minValue={0}
/>

Help text#

View guidelines

Both a description and an error message can be supplied to a NumberField. The description is always visible unless the validationState is “invalid” and an error message is provided. The error message can be used to help the user fix their input quickly and should be specific to the detected error. All strings should be localized.

function Example() {
  let [value, setValue] = React.useState(1);
  let isValid = React.useMemo(() => value > 0 || value === NaN, [value]);

  return (
    <NumberField
      validationState={value === NaN
        ? undefined
        : (isValid ? 'valid' : 'invalid')}
      value={value}
      onChange={setValue}
      label="Positive numbers only"
      description="Enter a positive number."
      errorMessage={value === 0
        ? 'Is zero positive?'
        : 'Positive numbers are bigger than 0.'}
    />
  );
}

function Example() {
  let [value, setValue] = React.useState(1);
  let isValid = React.useMemo(
    () => value > 0 || value === NaN,
    [value]
  );

  return (
    <NumberField
      validationState={value === NaN
        ? undefined
        : (isValid ? 'valid' : 'invalid')}
      value={value}
      onChange={setValue}
      label="Positive numbers only"
      description="Enter a positive number."
      errorMessage={value === 0
        ? 'Is zero positive?'
        : 'Positive numbers are bigger than 0.'}
    />
  );
}

function Example() {
  let [value, setValue] =
    React.useState(1);
  let isValid = React
    .useMemo(
      () =>
        value > 0 ||
        value === NaN,
      [value]
    );

  return (
    <NumberField
      validationState={value ===
          NaN
        ? undefined
        : (isValid
          ? 'valid'
          : 'invalid')}
      value={value}
      onChange={setValue}
      label="Positive numbers only"
      description="Enter a positive number."
      errorMessage={value ===
          0
        ? 'Is zero positive?'
        : 'Positive numbers are bigger than 0.'}
    />
  );
}

Contextual help#

A ContextualHelp element may be placed next to the label to provide additional information or help about a NumberField.

import {Content, ContextualHelp, Heading} from '@adobe/react-spectrum';

<NumberField
  label="Exposure"
  formatOptions={{
    signDisplay: 'exceptZero',
    minimumFractionDigits: 1,
    maximumFractionDigits: 2
  }}
  defaultValue={0}
  contextualHelp={
    <ContextualHelp>
      <Heading>What is exposure?</Heading>
      <Content>Exposure adjusts how bright the image is.</Content>
    </ContextualHelp>
  } />

import {
  Content,
  ContextualHelp,
  Heading
} from '@adobe/react-spectrum';

<NumberField
  label="Exposure"
  formatOptions={{
    signDisplay: 'exceptZero',
    minimumFractionDigits: 1,
    maximumFractionDigits: 2
  }}
  defaultValue={0}
  contextualHelp={
    <ContextualHelp>
      <Heading>What is exposure?</Heading>
      <Content>
        Exposure adjusts how bright the image is.
      </Content>
    </ContextualHelp>
  }
/>

import {
  Content,
  ContextualHelp,
  Heading
} from '@adobe/react-spectrum';

<NumberField
  label="Exposure"
  formatOptions={{
    signDisplay:
      'exceptZero',
    minimumFractionDigits:
      1,
    maximumFractionDigits:
      2
  }}
  defaultValue={0}
  contextualHelp={
    <ContextualHelp>
      <Heading>
        What is
        exposure?
      </Heading>
      <Content>
        Exposure
        adjusts how
        bright the
        image is.
      </Content>
    </ContextualHelp>
  }
/>

Custom width#

View guidelines

<NumberField label="Cookies" width="size-3600" maxWidth="100%" minValue={0} />

<NumberField
  label="Cookies"
  width="size-3600"
  maxWidth="100%"
  minValue={0}
/>

<NumberField
  label="Cookies"
  width="size-3600"
  maxWidth="100%"
  minValue={0}
/>