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Version: v6

ion-textarea

scoped

コンテンツ

textareaコンポーネントは複数行テキストの入力のためのコンポーネントです。ネイティブのtextarea要素がこのコンポーネントの内部に描画されます。ネイティブのtextareaを制御することによって、textareaコンポーネントのユーザ体験と対話性が向上します。

ネイティブのtextarea要素とは異なり、Ionicのtextareaは要素内部のコンテンツからその値を読み込むことをサポートしていません。textareaの値はvalue属性で設定しなくてはなりません。

textareaコンポーネントはIonicのプロパティに加えて ネイティブのtextareaの属性 に対応します。

Interfaces

TextareaChangeEventDetail

interface TextareaChangeEventDetail {
value?: string | null;
}

TextareaCustomEvent

必須ではありませんが、このコンポーネントから発行される Ionic イベントでより強く型付けを行うために、CustomEvent インターフェースの代わりにこのインターフェースを使用することが可能です。

interface TextareaCustomEvent extends CustomEvent {
detail: TextareaChangeEventDetail;
target: HTMLIonTextareaElement;
}

使い方

<!-- Default textarea -->
<ion-textarea></ion-textarea>

<!-- Textarea in an item with a placeholder -->
<ion-item>
<ion-textarea placeholder="Enter more information here..."></ion-textarea>
</ion-item>

<!-- Textarea in an item with a floating label -->
<ion-item>
<ion-label position="floating">Description</ion-label>
<ion-textarea></ion-textarea>
</ion-item>

<!-- Disabled and readonly textarea in an item with a stacked label -->
<ion-item>
<ion-label position="stacked">Summary</ion-label>
<ion-textarea
disabled
readonly
value="Ionic enables developers to build performant, high-quality mobile apps.">
</ion-textarea>
</ion-item>

<!-- Textarea that clears the value on edit -->
<ion-item>
<ion-label>Comment</ion-label>
<ion-textarea clearOnEdit="true"></ion-textarea>
</ion-item>

<!-- Textarea with custom number of rows and cols -->
<ion-item>
<ion-label>Notes</ion-label>
<ion-textarea rows="6" cols="20" placeholder="Enter any notes here..."></ion-textarea>
</ion-item>

プロパティ

autoGrow

DescriptionIf true, the textarea container will grow and shrink based on the contents of the textarea.
Attributeauto-grow
Typeboolean
Defaultfalse

autocapitalize

DescriptionIndicates 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".
Attributeautocapitalize
Typestring
Default'none'

autofocus

DescriptionThis Boolean attribute lets you specify that a form control should have input focus when the page loads.
Attributeautofocus
Typeboolean
Defaultfalse

clearOnEdit

DescriptionIf true, the value will be cleared after focus upon edit. Defaults to true when type is "password", false for all other types.
Attributeclear-on-edit
Typeboolean
Defaultfalse

color

DescriptionThe 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.
Attributecolor
Type"danger" | "dark" | "light" | "medium" | "primary" | "secondary" | "success" | "tertiary" | "warning" | string & Record<never, never> | undefined
Defaultundefined

cols

DescriptionThe visible width of the text control, in average character widths. If it is specified, it must be a positive integer.
Attributecols
Typenumber | undefined
Defaultundefined

debounce

DescriptionSet the amount of time, in milliseconds, to wait to trigger the ionChange event after each keystroke. This also impacts form bindings such as ngModel or v-model.
Attributedebounce
Typenumber
Default0

disabled

DescriptionIf true, the user cannot interact with the textarea.
Attributedisabled
Typeboolean
Defaultfalse

enterkeyhint

DescriptionA hint to the browser for which enter key to display. Possible values: "enter", "done", "go", "next", "previous", "search", and "send".
Attributeenterkeyhint
Type"done" | "enter" | "go" | "next" | "previous" | "search" | "send" | undefined
Defaultundefined

inputmode

DescriptionA hint to the browser for which keyboard to display. Possible values: "none", "text", "tel", "url", "email", "numeric", "decimal", and "search".
Attributeinputmode
Type"decimal" | "email" | "none" | "numeric" | "search" | "tel" | "text" | "url" | undefined
Defaultundefined

maxlength

DescriptionIf 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.
Attributemaxlength
Typenumber | undefined
Defaultundefined

minlength

DescriptionIf 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.
Attributeminlength
Typenumber | undefined
Defaultundefined

mode

DescriptionThe mode determines which platform styles to use.
Attributemode
Type"ios" | "md"
Defaultundefined

name

DescriptionThe name of the control, which is submitted with the form data.
Attributename
Typestring
Defaultthis.inputId

placeholder

DescriptionInstructional text that shows before the input has a value.
Attributeplaceholder
Typestring | undefined
Defaultundefined

readonly

DescriptionIf true, the user cannot modify the value.
Attributereadonly
Typeboolean
Defaultfalse

required

DescriptionIf true, the user must fill in a value before submitting a form.
Attributerequired
Typeboolean
Defaultfalse

rows

DescriptionThe number of visible text lines for the control.
Attributerows
Typenumber | undefined
Defaultundefined

spellcheck

DescriptionIf true, the element will have its spelling and grammar checked.
Attributespellcheck
Typeboolean
Defaultfalse

value

DescriptionThe value of the textarea.
Attributevalue
Typenull | string | undefined
Default''

wrap

DescriptionIndicates how the control wraps text.
Attributewrap
Type"hard" | "off" | "soft" | undefined
Defaultundefined

イベント

NameDescription
ionBlurEmitted when the input loses focus.
ionChangeEmitted when the input value has changed.
ionFocusEmitted when the input has focus.
ionInputEmitted when a keyboard input occurred.

メソッド

getInputElement

DescriptionReturns the native <textarea> element used under the hood.
SignaturegetInputElement() => Promise<HTMLTextAreaElement>

setFocus

DescriptionSets focus on the native textarea in ion-textarea. Use this method instead of the global textarea.focus().
SignaturesetFocus() => Promise<void>

CSS Shadow Parts

No CSS shadow parts available for this component.

CSSカスタムプロパティ

NameDescription
--backgroundBackground of the textarea
--border-radiusBorder radius of the textarea
--colorColor of the text
--padding-bottomBottom padding of the textarea
--padding-endRight padding if direction is left-to-right, and left padding if direction is right-to-left of the textarea
--padding-startLeft padding if direction is left-to-right, and right padding if direction is right-to-left of the textarea
--padding-topTop padding of the textarea
--placeholder-colorColor of the placeholder text
--placeholder-font-styleStyle of the placeholder text
--placeholder-font-weightWeight of the placeholder text
--placeholder-opacityOpacity of the placeholder text

Slots

No slots available for this component.