Number Input
The NumberInput
component is similar to the Input
component, but it has controls for incrementing or decrementing numeric values.
It follows the WAI-ARIA authoring practices for the Spinbutton widget.
Import#
Chakra UI exports 5 components for the NumberInput.
NumberInput
: The wrapper that provides context and logic to the components.NumberInputField
: Theinput
field itself.NumberInputStepper
: The wrapper for the input's stepper buttons.NumberIncrementStepper
: The button to increment the value of the input.NumberDecrementStepper
: The button to decrement the value of the input.
import {NumberInput,NumberInputField,NumberInputStepper,NumberIncrementStepper,NumberDecrementStepper,} from "@chakra-ui/react"
Usage#
The NumberInput
is composed of smaller components to give you control of the
styling of each part.
Setting a minimum and maximum value#
Pass the min
prop or max
prop to set an upper and lower limit for the input.
By default, the input will restrict the value to stay within the specified
range.
Setting the step size#
Pass the step
prop to change the step size when you increment or decrement the
value. By default, the value is rounded to match the number of decimals in the
step
.
Adjusting the precision of the value#
In some cases, you might need the value to be rounded to specific decimal
points. Simply pass the precision
prop and set it to the number of decimal
points.
Clamp value when user blurs the input#
In most cases, users can type custom values in the input field. If the typed
value is greater than the max
, the value is reset to max
when the user blur
out of the input.
To disable this behavior, pass clampValueOnBlur
and set to false
.
In this example, try to type a value greater than the max. It won't reset the value on blur.
Allowing out of range values#
In some scenarios, you might not want to block out of range values. Pass the
keepWithinRange
and clampValueOnBlur
props and set them to false
to
support this use case.
The NumberInput will be set
isInvalid
totrue
internally when the value is out of range. Out of range means that thevalue
is great thanmax
or less thanmin
.
Formatting and Parsing the value#
Changing the size of the input#
Like the Input
component, you can pass the size
prop to change the size of
the input.
Changing the styles#
You can change the style of any part of the components using style props. You can also change the icons used in the steppers.
Combining it with a Slider#
A common use case is to combine the NumberInput
with a Slider
.
We recommend disabling focusThumbOnChange
on the Slider
, so the NumberInput
won't lose focus after input.
Here's an example of how to do that:
Create a mobile spinner#
Sometimes, you might need to create a mobile version of the number input. Here's
how you can leverage the useNumberInput
hook to build one.
Increment value using Mouse wheel#
The NumberInput
component supports the ability to increment or decrement
values using the mouse wheel events. To activate this, pass the
allowMouseWheel
prop.
Accessibility#
Aria Roles#
- The input has
role
set tospinbutton
to denote that users are to select from a range of discrete values using an up and down arrows on the keyboard. - The input has
aria-valuemin
set to the minimum value allowed for the spinbutton. - The input has
aria-valuemax
set to the maximum value allowed for the spinbutton. attribute should be applied to the spinbutton. - The input has
aria-valuenow
set to the current value of theinput
. - The custom spinner (up and down buttons) has
aria-hidden
set totrue
to make them invisible to screen readers.
Keyboard Navigation#
- When you hit the ⬆ or ⬇ key, the input value will be
increased or decreased by
step
. - Holding down Shift and pressing ⬆ or ⬇ will
update the value by
10 * step
. - Holding down Ctrl or ⌘, and pressing ⬆ or⬆ will update the value by `0.1 * step`.
- Long pressing the up and down stepper buttons will update the value at intervals.
Props#
NumberInput Props#
NumberInput composes Flex
with some additional props listed below.
Name | Type | Description | Default |
---|---|---|---|
allowMouseWheel | boolean | If `true`, the input's value will change based on mouse wheel | - |
clampValueOnBlur | boolean | This controls the value update when you blur out of the input. - If `true` and the value is greater than `max`, the value will be reset to `max` - Else, the value remains the same. | true |
colorScheme | "blue" | "cyan" | "gray" | "green" | "orange" | "pink" | "purple" | "red" | "teal" | "yellow" | "whiteAlpha" | "blackAlpha" | "linkedin" | "facebook" | "messenger" | "whatsapp" | "twitter" | "telegram" | Color Schemes for NumberInput are not implemented in the default theme. You can extend the theme to implement them. | - |
defaultValue | string | number | The initial value of the counter. Should be less than `max` and greater than `min` | - |
errorBorderColor | string | The border color when the input is invalid. Use color keys in `theme.colors` @example errorBorderColor = "red.500" | - |
focusBorderColor | string | The border color when the input is focused. Use color keys in `theme.colors` @example focusBorderColor = "blue.500" | - |
focusInputOnChange | boolean | If `true`, the input will be focused as you increment or decrement the value with the stepper | true |
getAriaValueText | ((value: ReactText) => string) | This is used to format the value so that screen readers can speak out a more human-friendly value. It is used to set the `aria-valuetext` property of the input | - |
id | string | The `id` to use for the number input field. | - |
inputMode | "text" | "search" | "none" | "tel" | "url" | "email" | "numeric" | "decimal" | Hints at the type of data that might be entered by the user. It also determines the type of keyboard shown to the user on mobile devices | "decimal" |
isDisabled | boolean | If `true`, the input will be disabled | - |
isFullWidth | boolean | If `true`, the input element will span the full width of its parent @deprecated This component defaults to 100% width, please use the props `maxWidth` or `width` to configure | - |
isInvalid | boolean | If `true`, the input will have `aria-invalid` set to `true` | - |
isReadOnly | boolean | If `true`, the input will be in readonly mode | - |
keepWithinRange | boolean | This controls the value update behavior in general. - If `true` and you use the stepper or up/down arrow keys, the value will not exceed the `max` or go lower than `min` - If `false`, the value will be allowed to go out of range. | true |
max | number | The maximum value of the counter | Infinity |
min | number | The minimum value of the counter | -Infinity |
name | string | The HTML `name` attribute used for forms | - |
onChange | ((valueAsString: string, valueAsNumber: number) => void) | The callback fired when the value changes | - |
pattern | string | The pattern used to check the <input> element's value against on form submission. | "[0-9]*(.[0-9]+)?" |
precision | number | The number of decimal points used to round the value | - |
size | "sm" | "md" | "lg" | "xs" | "md" | |
step | number | The step used to increment or decrement the value | 1 |
value | string | number | The value of the counter. Should be less than `max` and greater than `min` | - |
variant | "outline" | "unstyled" | "filled" | "flushed" | "outline" |
NumberInputField Props#
NumberInput
composes Input
so you can pass all Input
props.
NumberInputStepper Props#
NumberInputStepper
composes Flex
so you can pass all Flex
props.
NumberDecrementStepper and NumberIncrementStepper Props#
NumberDecrementStepper
and NumberIncrementStepper
composes the Box
props
so you can pass all Box
props.