semi-design/content/input/inputnumber/index-en-US.md

---

localeCode: en-US order: 35 category: Input title: InputNumber subTitle: InputNumber icon: doc-inputnumber

brief: Through the mouse or keyboard, input the value in the range. Unlike Input, it has a stepper operation area for digital scenes, and it can display more complex content formats when used with Parser.

When to Use

When you need to get a standard value.

Demos

How to import

import { InputNumber } from '@douyinfe/semi-ui';

Basic Input Box

import React from 'react';
import { InputNumber } from '@douyinfe/semi-ui';

class App extends React.Component {
    render() {
        return (
            <div style={{ width: 280 }}>
                <label>Simple</label>
                <InputNumber />
                <br/><br/>

                <label>Set step to 2 </label>
                <InputNumber step={2} />
                <br/><br/>

                <label>Press shift key and click the button to increase/decrease the step size </label>
                <InputNumber shiftStep={100} />
                <br/><br/>

                <label>Set min to 1, max to 10</label>
                <InputNumber min={1} max={10} Default Value={1} />
                <br/><br/>
            </div>
        );
    }
}

import React from 'react';
import { InputNumber } from '@douyinfe/semi-ui';

class App extends React.Component {
    render() {
        return (
            <div style={{ width: 280 }}>
                <label>Set defaultValue to 1 </label>
                <InputNumber defaultValue={1} />
                <br/><br/>

                <label>Set disabled to true</label>
                <InputNumber defaultValue={2} disabled />
                <br/><br/>

                <label>Set precision to 2 </label>
                <InputNumber precision={2} defaultValue={1.234} />
                <br/><br/>

                <label>Set innerButtons=true </label>
                <InputNumber innerButtons={true} suffix={'Hour'} defaultValue={1} style={{ width: 190 }} />
                <br/>

            </div>
        );
    }
}

Inner Buttons

With innerButtons, you can hide the buttons on the right into the interior, which will only be displayed when hover occurs

import React from 'react';
import { InputNumber } from '@douyinfe/semi-ui';

() => (
    <InputNumber innerButtons style={{ width: 190 }} />
);

Set hidebuttons to true to hide the buttons completely

import React from 'react';
import { InputNumber } from '@douyinfe/semi-ui';

() => (
    <InputNumber hideButtons style={{ width: 190 }} />
);

Size

import React from 'react';
import { InputNumber } from '@douyinfe/semi-ui';

class App extends React.Component {
    render() {
        return (
            <div style={{ width: 180 }}>
                <label>size=default</label>
                <InputNumber />
                <br/><br/>

                <label>size=large</label>
                <InputNumber size="large" />
                <br/><br/>

                <label>size=small</label>
                <InputNumber size="small" />
                <br/>

            </div>
        );
    }
}

Custom Display Format and Resolution

A pair of methods for formatter and parser, which generally need to be set at the same time, otherwise the value cannot be resolved correctly.

import React from 'react';
import { InputNumber } from '@douyinfe/semi-ui';

class App extends React.Component {
    log(v) {
        console.log(`Changed to: [${typeof v}] ${v}`);
    }

    render() {
        return (
            <div style={{ width: 180 }}>
                <label>RMB</label>
                <InputNumber
                    onChange={this.log}
                    defaultValue={1000}
                    min={0}
                    formatter={value => `￥ ${value}`.replace(/\B(?=(\d{3})+(?!\d))/g, ',')}
                    parser={value => value.replace(/\￥\s?|(,*)/g, '')}
                />
                <br/><br/>

                <label>Custom string</label>
                <InputNumber
                    onChange={this.log}
                    defaultValue={1111}
                    formatter={value => String(value).split('').join('-')}
                    parser={value => value.replace(/\-/g, '')}
                />
                <br/>

            </div>
        );
    }
}

Can Only Enter Numbers

With formatter and onNumberChange(>=v1.9.0), a pure digital input box can be implemented.

import React from 'react';
import { InputNumber } from '@douyinfe/semi-ui';

function Demo () {
    return (
        <InputNumber
            formatter={value => `${value}`.replace(/\D/g, '')}
            onNumberChange={number => console.log(number)}
            min={0}
            max={Number.MAX_SAFE_INTEGER}
        />
    );
}

API Reference

Properties	Instructions	type	Default	Version
autofocus	Automatic access to focus	boolean	false
className	class name of InputNumber	string	-
clearIcon	Can be used to customize the clear button, valid when showClear is true	ReactNode		2.25.0
defaultValue	Default	number
disabled	Disabled status	boolean	false
formatter	Specifies the format of the input box to display the value	(value: number|string) => string	-
hideButtons	Hide the "up/down" button when passing true	boolean	false	1.0.0
innerButtons	Show the "up/down" button in input box when passing true	boolean	false	1.5.0
insetLabel	Prefix label, lower priority than prefix	string|ReactNode
keepFocus	Keep the input box focused when you click the button	boolean	false	1.10.0
max	Limit maximum value	number	Infinity
min	Limit minimum value	number	-Infinity
parser	Specifies how to convert back number string from formatter and use them in conjunction with formatter	(value: string) => string	-
precision	Numerical precision	number	-
prefix	Prefix content	string|ReactNode
pressInterval	How often will the click event be triggered when the button is long pressed, in milliseconds	number	250
pressTimeout	When the button is long pressed, how long will the click event be triggered after the delay, in milliseconds	number	250
preventScroll	Indicates whether the browser should scroll the document to display the newly focused element, acting on the focus method inside the component, excluding the component passed in by the user	boolean
shiftStep	Step size for pressing the shift key, it can be a decimal. The default value was adjusted from 1 to 10 in v2.13	number	10	1.5.0
showClear	Do you show the clear button?	boolean	false	0.35.0
size	Enter box size, optional value: "default"|"small"|"large"	string	'default'
step	Each time you change the number of steps, it can be a decimal.	number	1
style	Inline style of InputNumber	CSSProperties	-
suffix	Custom suffix	ReactNode
value	Current value	number
onBlur	Callback when focus is lost	(e: domEvent) => void	() => {}	1.0.0
onChange	Change callback	(value: number|string) => void	-
onFocus	Callback when focus is obtained	(e: domEvent) => void	() => {}	1.0.0
onNumberChange	Number change callback	(value: number) => void	-	1.9.0

Methods

Some internal methods provided by InputNumber can be accessed through ref:

Name	Description
blur()	Move the focus.
focus()	Get the focus.

Accessibility

Guideline: https://www.w3.org/WAI/ARIA/apg/patterns/spinbutton/

ARIA

• InputNumber has spinbutton role
• spinbutton uses aria-valuenow for current value, aria-valuemax for acceptable maximum value, and aria-valuemin for acceptable minimum value
• When InputNumber is used in Form, the value of the input box's aria-labeledby reference is Field label

Keyboard and Focus

• InputNumber can get focus, keyboard users can use Tab and Shift + Tab to switch focus (Increase and decrease buttons are not focusable)
• Keyboard users can press up key ⬆️ or down key ⬇️ and the input value will increase or decrease by step (default is 1)
• Hold down Shift + Up ⬆️ or Down ⬇️ , the input value will increase or decrease by shiftStep (default is 10)

Design Tokens