ion-input

scoped

The input component is a wrapper to the HTML input element with custom styling and additional functionality. It accepts most of the same properties as the HTML input, but works great on desktop devices and integrates with the keyboard on mobile devices.

Basic Usage

Types

The input component is meant for text type inputs only, such as "text", "password", "email", "number", "search", "tel", and "url". It supports all standard text input events including keyup, keydown, keypress, and more. The default type is "text".

Labels

Labels should be used to describe the input. They can be used visually, and they will also be read out by screen readers when the user is focused on the input. This makes it easy for the user to understand the intent of the input. Input has several ways to assign a label:

• label property: used for plaintext labels
• label slot: used for custom HTML labels (experimental)
• aria-label: used to provide a label for screen readers but adds no visible label

Label Placement

Labels will take up the width of their content by default. Developers can use the labelPlacement property to control how the label is placed relative to the control.

Label Slot (experimental)

While plaintext labels should be passed in via the label property, if custom HTML is needed, it can be passed through the label slot instead.

Note that this feature is considered experimental because it relies on a simulated version of Web Component slots. As a result, the simulated behavior may not exactly match the native slot behavior.

No Visible Label

If no visible label is needed, developers should still supply an aria-label so the input is accessible to screen readers.

Clear Options

Inputs offer two options for clearing the input based on how you interact with it. The first way is by adding the clearInput property which will show a clear button when the input has a value. The second way is the clearOnEdit property which will clear the input after it has been blurred and then typed in again. Inputs with a type set to "password" will have clearOnEdit enabled by default.

Filled Inputs

Material Design offers filled styles for an input. The fill property on the input can be set to either "solid" or "outline".

Since the fill styles visually defines the input container, inputs that use fill should not be used in ion-item.

Filled inputs can be used on iOS by setting Input's mode to md.

Helper & Error Text

Helper and error text can be used inside of an input with the helperText and errorText property. The error text will not be displayed unless the ion-invalid and ion-touched classes are added to the ion-input. This ensures errors are not shown before the user has a chance to enter data.

In Angular, this is done automatically through form validation. In JavaScript, React and Vue, the class needs to be manually added based on your own validation.

Input Counter

The input counter is text that displays under an input to notify the user of how many characters have been entered out of the total that the input will accept. When adding counter, the default behavior is to format the value that gets displayed as inputLength / maxLength. This behavior can be customized by passing in a formatter function to the counterFormatter property.

The counter and counterFormatter properties on ion-item were deprecated in Ionic 7 and should be used directly on ion-input instead.

Inputs with a counter add a border between the input and the counter, therefore they should not be placed inside of an ion-item which adds an additional border under the item. The ion-padding-start class can be added to align the counter inputs with inputs inside of items.

Filtering User Input

Developers can use the ionInput event to update the input value in response to user input such as a keypress. This is useful for filtering out invalid or unwanted characters.

When storing the value in a state variable, we recommend updating both the state variable and the ion-input component value. This ensures that the state variable and the ion-input component value remain in sync.

Input Masking

Input masks are expressions that constrain input to support valid input values. Ionic recommends using Maskito for input masking. Maskito is a lightweight, dependency-free library for masking input fields. It supports a wide range of masks, including phone numbers, credit cards, dates, and more.

To get started with Maskito, install the library:

npm install @maskito/core @maskito/{angular,react,vue}

注記

Please submit bug reports with Maskito to the Maskito Github repository. For technical support, please use the Ionic Forum or Ionic Discord.

Start and End Slots (experimental)

The start and end slots can be used to place icons, buttons, or prefix/suffix text on either side of the input.

Note that this feature is considered experimental because it relies on a simulated version of Web Component slots. As a result, the simulated behavior may not exactly match the native slot behavior.

注記

In most cases, Icon components placed in these slots should have aria-hidden="true". See the Icon accessibility docs for more information.

If slot content is meant to be interacted with, it should be wrapped in an interactive element such as a Button. This ensures that the content can be tabbed to.

Theming

Colors

Setting the color property changes the color palette for each input. On ios mode, this property changes the caret color. On md mode, this property changes the caret color and the highlight/underline color.

注記

The color property does not change the text color of the input. For that, use the --color CSS property.

CSS Custom Properties

Input uses scoped encapsulation, which means it will automatically scope its CSS by appending each of the styles with an additional class at runtime. Overriding scoped selectors in CSS requires a higher specificity selector. Targeting the ion-input for customization will not work; therefore we recommend adding a class and customizing it that way.

Migrating from Legacy Input Syntax

A simpler input syntax was introduced in Ionic 7.0. This new syntax reduces the boilerplate required to setup an input, resolves accessibility issues, and improves the developer experience.

Developers can perform this migration one input at a time. While developers can continue using the legacy syntax, we recommend migrating as soon as possible.

Using the Modern Syntax

Using the modern syntax involves three steps:

1. Remove ion-label and use the label property on ion-input instead. The placement of the label can be configured using the labelPlacement property on ion-input.
2. Move input-specific properties from ion-item on to ion-input. This includes the counter, counterFormatter, fill, and shape properties.
3. Remove usages of the helper and error slots on ion-item and use the helperText and errorText properties on ion-input instead.

JavaScript

<!-- Label and Label Position -->

<!-- Before -->
<ion-item>
  <ion-label position="floating">Email:</ion-label>
  <ion-input></ion-input>
</ion-item>

<!-- After -->
<ion-item>
  <ion-input label="Email:" label-placement="floating"></ion-input>
</ion-item>


<!-- Fill -->

<!-- Before -->
<ion-item fill="outline" shape="round">
  <ion-label position="floating">Email:</ion-label>
  <ion-input></ion-input>
</ion-item>

<!-- After -->

<!-- Inputs using `fill` should not be placed in ion-item -->
<ion-input fill="outline" shape="round" label="Email:" label-placement="floating"></ion-input>

<!-- Input-specific features on ion-item -->

<!-- Before -->
<ion-item counter="true">
  <ion-label position="floating">Email:</ion-label>
  <ion-input maxlength="100"></ion-input>
  <div slot="helper">Enter an email</div>
  <div slot="error">Please enter a valid email</div>
</ion-item>

<!-- After -->

<!--
  Metadata such as counters and helper text should not
  be used when an input is in an item/list. If you need to
  provide more context on a input, consider using an ion-note
  underneath the ion-list.
-->

<ion-input
  label="Email:"
  counter="true"
  maxlength="100"
  helper-text="Enter an email"
  error-text="Please enter a valid email"
></ion-input>

Angular

<!-- Label and Label Position -->

<!-- Before -->
<ion-item>
  <ion-label position="floating">Email:</ion-label>
  <ion-input></ion-input>
</ion-item>

<!-- After -->
<ion-item>
  <ion-input label="Email:" labelPlacement="floating"></ion-input>
</ion-item>


<!-- Fill -->

<!-- Before -->
<ion-item fill="outline" shape="round">
  <ion-label position="floating">Email:</ion-label>
  <ion-input></ion-input>
</ion-item>

<!-- After -->

<!-- Inputs using `fill` should not be placed in ion-item -->
<ion-input fill="outline" shape="round" label="Email:" labelPlacement="floating"></ion-input>

<!-- Input-specific features on ion-item -->

<!-- Before -->
<ion-item [counter]="true">
  <ion-label position="floating">Email:</ion-label>
  <ion-input maxlength="100"></ion-input>
  <div slot="helper">Enter an email</div>
  <div slot="error">Please enter a valid email</div>
</ion-item>

<!-- After -->

<!--
  Metadata such as counters and helper text should not
  be used when an input is in an item/list. If you need to
  provide more context on a input, consider using an ion-note
  underneath the ion-list.
-->

<ion-input
  label="Email:"
  [counter]="true"
  maxlength="100"
  helperText="Enter an email"
  errorText="Please enter a valid email"
></ion-input>

React

{/* Label and Label Position */}

{/* Before */}
<IonItem>
  <IonLabel position="floating">Email:</IonLabel>
  <IonInput></IonInput>
</IonItem>

{/* After */}
<IonItem>
  <IonInput label="Email:" labelPlacement="floating"></IonInput>
</IonItem>


{/* Fill */}

{/* Before */}
<IonItem fill="outline" shape="round">
  <IonLabel position="floating">Email:</IonLabel>
  <IonInput></IonInput>
</IonItem>

{/* After */}

{/* Inputs using `fill` should not be placed in IonItem */}
<IonInput fill="outline" shape="round" label="Email:" labelPlacement="floating"></IonInput>

{/* Input-specific features on IonItem */}

{/* Before */}
<IonItem counter={true}>
  <IonLabel position="floating">Email:</IonLabel>
  <IonInput maxlength="100"></IonInput>
  <div slot="helper">Enter an email</div>
  <div slot="error">Please enter a valid email</div>
</IonItem>

{/* After */}

{/*
  Metadata such as counters and helper text should not
  be used when an input is in an item/list. If you need to
  provide more context on a input, consider using an IonNote
  underneath the IonList.
*/}

<IonInput
  label="Email:"
  counter={true}
  maxlength="100"
  helperText="Enter an email"
  errorText="Please enter a valid email"
></IonInput>

Vue

<!-- Label and Label Position -->

<!-- Before -->
<ion-item>
  <ion-label position="floating">Email:</ion-label>
  <ion-input></ion-input>
</ion-item>

<!-- After -->
<ion-item>
  <ion-input label="Email:" label-placement="floating"></ion-input>
</ion-item>


<!-- Fill -->

<!-- Before -->
<ion-item fill="outline" shape="round">
  <ion-label position="floating">Email:</ion-label>
  <ion-input></ion-input>
</ion-item>

<!-- After -->

<!-- Inputs using `fill` should not be placed in ion-item -->
<ion-input fill="outline" shape="round" label="Email:" label-placement="floating"></ion-input>

<!-- Input-specific features on ion-item -->

<!-- Before -->
<ion-item :counter="true">
  <ion-label position="floating">Email:</ion-label>
  <ion-input maxlength="100"></ion-input>
  <div slot="helper">Enter an email</div>
  <div slot="error">Please enter a valid email</div>
</ion-item>

<!-- After -->

<!--
  Metadata such as counters and helper text should not
  be used when an input is in an item/list. If you need to
  provide more context on a input, consider using an ion-note
  underneath the ion-list.
-->

<ion-input
  label="Email:"
  :counter="true"
  maxlength="100"
  helper-text="Enter an email"
  error-text="Please enter a valid email"
></ion-input>

Using the Legacy Syntax

Ionic uses heuristics to detect if an app is using the modern input syntax. In some instances, it may be preferable to continue using the legacy syntax. Developers can set the legacy property on ion-input to true to force that instance of the input to use the legacy syntax.

Interfaces

InputChangeEventDetail

interface InputChangeEventDetail {
  value: string | undefined | null;
}

InputCustomEvent

While not required, this interface can be used in place of the CustomEvent interface for stronger typing with Ionic events emitted from this component.

interface InputCustomEvent extends CustomEvent {
  detail: InputChangeEventDetail;
  target: HTMLIonInputElement;
}

Properties

accept (deprecated)

Description	This attribute is ignored. Deprecated
Attribute	accept
Type	string ｜ undefined
Default	undefined

autocapitalize

Description	Indicates whether and how the text value should be automatically capitalized as it is entered/edited by the user. Available options: "off", "none", "on", "sentences", "words", "characters".
Attribute	autocapitalize
Type	string
Default	'off'

autocomplete

Description	Indicates whether the value of the control can be automatically completed by the browser.
Attribute	autocomplete
Type	"name" ｜ "email" ｜ "tel" ｜ "url" ｜ "on" ｜ "off" ｜ "honorific-prefix" ｜ "given-name" ｜ "additional-name" ｜ "family-name" ｜ "honorific-suffix" ｜ "nickname" ｜ "username" ｜ "new-password" ｜ "current-password" ｜ "one-time-code" ｜ "organization-title" ｜ "organization" ｜ "street-address" ｜ "address-line1" ｜ "address-line2" ｜ "address-line3" ｜ "address-level4" ｜ "address-level3" ｜ "address-level2" ｜ "address-level1" ｜ "country" ｜ "country-name" ｜ "postal-code" ｜ "cc-name" ｜ "cc-given-name" ｜ "cc-additional-name" ｜ "cc-family-name" ｜ "cc-number" ｜ "cc-exp" ｜ "cc-exp-month" ｜ "cc-exp-year" ｜ "cc-csc" ｜ "cc-type" ｜ "transaction-currency" ｜ "transaction-amount" ｜ "language" ｜ "bday" ｜ "bday-day" ｜ "bday-month" ｜ "bday-year" ｜ "sex" ｜ "tel-country-code" ｜ "tel-national" ｜ "tel-area-code" ｜ "tel-local" ｜ "tel-extension" ｜ "impp" ｜ "photo"
Default	'off'

autocorrect

Description	Whether auto correction should be enabled when the user is entering/editing the text value.
Attribute	autocorrect
Type	"off" ｜ "on"
Default	'off'

autofocus

Description	Sets the autofocus attribute on the native input element. This may not be sufficient for the element to be focused on page load. See managing focus for more information.
Attribute	autofocus
Type	boolean
Default	false

clearInput

Description	If true, a clear icon will appear in the input when there is a value. Clicking it clears the input.
Attribute	clear-input
Type	boolean
Default	false

clearOnEdit

Description	If true, the value will be cleared after focus upon edit. Defaults to true when type is "password", false for all other types.
Attribute	clear-on-edit
Type	boolean ｜ undefined
Default	undefined

color

Description	The color to use from your application's color palette. Default options are: "primary", "secondary", "tertiary", "success", "warning", "danger", "light", "medium", and "dark". For more information on colors, see theming.
Attribute	color
Type	"danger" ｜ "dark" ｜ "light" ｜ "medium" ｜ "primary" ｜ "secondary" ｜ "success" ｜ "tertiary" ｜ "warning" ｜ string ｜ undefined
Default	undefined

counter

Description	If true, a character counter will display the ratio of characters used and the total character limit. Developers must also set the maxlength property for the counter to be calculated correctly.
Attribute	counter
Type	boolean
Default	false

counterFormatter

Description	A callback used to format the counter text. By default the counter text is set to "itemLength / maxLength". See https://ionicframework.com/docs/troubleshooting/runtime#accessing-this if you need to access this from within the callback.
Attribute	undefined
Type	((inputLength: number, maxLength: number) => string) ｜ undefined
Default	undefined

debounce

Description	Set the amount of time, in milliseconds, to wait to trigger the ionInput event after each keystroke.
Attribute	debounce
Type	number ｜ undefined
Default	undefined

disabled

Description	If true, the user cannot interact with the input.
Attribute	disabled
Type	boolean
Default	false

enterkeyhint

Description	A hint to the browser for which enter key to display. Possible values: "enter", "done", "go", "next", "previous", "search", and "send".
Attribute	enterkeyhint
Type	"done" ｜ "enter" ｜ "go" ｜ "next" ｜ "previous" ｜ "search" ｜ "send" ｜ undefined
Default	undefined

errorText

Description	Text that is placed under the input and displayed when an error is detected.
Attribute	error-text
Type	string ｜ undefined
Default	undefined

fill

Description	The fill for the item. If "solid" the item will have a background. If "outline" the item will be transparent with a border. Only available in md mode.
Attribute	fill
Type	"outline" ｜ "solid" ｜ undefined
Default	undefined

helperText

Description	Text that is placed under the input and displayed when no error is detected.
Attribute	helper-text
Type	string ｜ undefined
Default	undefined

inputmode

Description	A hint to the browser for which keyboard to display. Possible values: "none", "text", "tel", "url", "email", "numeric", "decimal", and "search".
Attribute	inputmode
Type	"decimal" ｜ "email" ｜ "none" ｜ "numeric" ｜ "search" ｜ "tel" ｜ "text" ｜ "url" ｜ undefined
Default	undefined

label

Description	The visible label associated with the input. Use this if you need to render a plaintext label. The label property will take priority over the label slot if both are used.
Attribute	label
Type	string ｜ undefined
Default	undefined

labelPlacement

Description	Where to place the label relative to the input. "start": The label will appear to the left of the input in LTR and to the right in RTL. "end": The label will appear to the right of the input in LTR and to the left in RTL. "floating": The label will appear smaller and above the input when the input is focused or it has a value. Otherwise it will appear on top of the input. "stacked": The label will appear smaller and above the input regardless even when the input is blurred or has no value. "fixed": The label has the same behavior as "start" except it also has a fixed width. Long text will be truncated with ellipses ("...").
Attribute	label-placement
Type	"end" ｜ "fixed" ｜ "floating" ｜ "stacked" ｜ "start"
Default	'start'

legacy

Description	Set the legacy property to true to forcibly use the legacy form control markup. Ionic will only opt components in to the modern form markup when they are using either the aria-label attribute or the label property. As a result, the legacy property should only be used as an escape hatch when you want to avoid this automatic opt-in behavior. Note that this property will be removed in an upcoming major release of Ionic, and all form components will be opted-in to using the modern form markup.
Attribute	legacy
Type	boolean ｜ undefined
Default	undefined

max

Description	The maximum value, which must not be less than its minimum (min attribute) value.
Attribute	max
Type	number ｜ string ｜ undefined
Default	undefined

maxlength

Description	If the value of the type attribute is text, email, search, password, tel, or url, this attribute specifies the maximum number of characters that the user can enter.
Attribute	maxlength
Type	number ｜ undefined
Default	undefined

min

Description	The minimum value, which must not be greater than its maximum (max attribute) value.
Attribute	min
Type	number ｜ string ｜ undefined
Default	undefined

minlength

Description	If the value of the type attribute is text, email, search, password, tel, or url, this attribute specifies the minimum number of characters that the user can enter.
Attribute	minlength
Type	number ｜ undefined
Default	undefined

mode

Description	The mode determines which platform styles to use.
Attribute	mode
Type	"ios" ｜ "md"
Default	undefined

multiple

Description	If true, the user can enter more than one value. This attribute applies when the type attribute is set to "email", otherwise it is ignored.
Attribute	multiple
Type	boolean ｜ undefined
Default	undefined

name

Description	The name of the control, which is submitted with the form data.
Attribute	name
Type	string
Default	this.inputId

pattern

Description	A regular expression that the value is checked against. The pattern must match the entire value, not just some subset. Use the title attribute to describe the pattern to help the user. This attribute applies when the value of the type attribute is "text", "search", "tel", "url", "email", "date", or "password", otherwise it is ignored. When the type attribute is "date", pattern will only be used in browsers that do not support the "date" input type natively. See https://developer.mozilla.org/en-US/docs/Web/HTML/Element/input/date for more information.
Attribute	pattern
Type	string ｜ undefined
Default	undefined

placeholder

Description	Instructional text that shows before the input has a value. This property applies only when the type property is set to "email", "number", "password", "search", "tel", "text", or "url", otherwise it is ignored.
Attribute	placeholder
Type	string ｜ undefined
Default	undefined

readonly

Description	If true, the user cannot modify the value.
Attribute	readonly
Type	boolean
Default	false

required

Description	If true, the user must fill in a value before submitting a form.
Attribute	required
Type	boolean
Default	false

shape

Description	The shape of the input. If "round" it will have an increased border radius.
Attribute	shape
Type	"round" ｜ undefined
Default	undefined

size

Description
Attribute	size
Type	number ｜ undefined
Default	undefined

spellcheck

Description	If true, the element will have its spelling and grammar checked.
Attribute	spellcheck
Type	boolean
Default	false

step

Description	Works with the min and max attributes to limit the increments at which a value can be set. Possible values are: "any" or a positive floating point number.
Attribute	step
Type	string ｜ undefined
Default	undefined

type

Description	The type of control to display. The default type is text.
Attribute	type
Type	"date" ｜ "datetime-local" ｜ "email" ｜ "month" ｜ "number" ｜ "password" ｜ "search" ｜ "tel" ｜ "text" ｜ "time" ｜ "url" ｜ "week"
Default	'text'

value

Description	The value of the input.
Attribute	value
Type	null ｜ number ｜ string ｜ undefined
Default	''

Events

Name	Description	Bubbles
ionBlur	Emitted when the input loses focus.	true
ionChange	The ionChange event is fired when the user modifies the input's value. Unlike the ionInput event, the ionChange event is only fired when changes are committed, not as the user types. Depending on the way the users interacts with the element, the ionChange event fires at a different moment: - When the user commits the change explicitly (e.g. by selecting a date from a date picker for <ion-input type="date">, pressing the "Enter" key, etc.). - When the element loses focus after its value has changed: for elements where the user's interaction is typing.	true
ionFocus	Emitted when the input has focus.	true
ionInput	The ionInput event is fired each time the user modifies the input's value. Unlike the ionChange event, the ionInput event is fired for each alteration to the input's value. This typically happens for each keystroke as the user types. For elements that accept text input (type=text, type=tel, etc.), the interface is InputEvent; for others, the interface is Event. If the input is cleared on edit, the type is null.	true

Methods

getInputElement

Description	Returns the native <input> element used under the hood.
Signature	getInputElement() => Promise<HTMLInputElement>

setFocus

Description	Sets focus on the native input in ion-input. Use this method instead of the global input.focus(). Developers who wish to focus an input when a page enters should call setFocus() in the ionViewDidEnter() lifecycle method. Developers who wish to focus an input when an overlay is presented should call setFocus after didPresent has resolved. See managing focus for more information.
Signature	setFocus() => Promise<void>

CSS Shadow Parts

No CSS shadow parts available for this component.

CSS Custom Properties

Name	Description
--background	Background of the input
--border-color	Color of the border below the input when using helper text, error text, or counter
--border-radius	Radius of the input. A large radius may display unevenly when using fill="outline"; if needed, use shape="round" instead or increase --padding-start.
--border-style	Style of the border below the input when using helper text, error text, or counter
--border-width	Width of the border below the input when using helper text, error text, or counter
--color	Color of the input text
--highlight-color-focused	The color of the highlight on the input when focused
--highlight-color-invalid	The color of the highlight on the input when invalid
--highlight-color-valid	The color of the highlight on the input when valid
--padding-bottom	Bottom padding of the input
--padding-end	Right padding if direction is left-to-right, and left padding if direction is right-to-left of the input
--padding-start	Left padding if direction is left-to-right, and right padding if direction is right-to-left of the input
--padding-top	Top padding of the input
--placeholder-color	Color of the input placeholder text
--placeholder-font-style	Font style of the input placeholder text
--placeholder-font-weight	Font weight of the input placeholder text
--placeholder-opacity	Opacity of the input placeholder text

Slots

Name	Description
end	Content to display at the trailing edge of the input. (EXPERIMENTAL)
label	The label text to associate with the input. Use the labelPlacement property to control where the label is placed relative to the input. Use this if you need to render a label with custom HTML. (EXPERIMENTAL)
start	Content to display at the leading edge of the input. (EXPERIMENTAL)