useTextareaAutosize

Demo

Type, the textarea will grow:

Usage

Simple example

vue

<script setup lang="ts">
import { useTextareaAutosize
 } from '@vueuse/core'

const { textarea
, input
 } = useTextareaAutosize
()
</script>

<template>
  <textarea

    ref
="textarea
"
    v-model
="input
"
    class
="resize-none"
    placeholder
="What's on your mind?"
  />
</template>

INFO

It's recommended to reset the scrollbar styles for the textarea element to avoid incorrect height values for large amounts of text.

css

textarea {
  -ms-overflow-style: none;
  scrollbar-width: none;
}

textarea::-webkit-scrollbar {
  display: none;
}

With `rows` attribute

If you need support for the rows attribute on a textarea element, then you should set the styleProp option to minHeight.

vue

<script setup lang="ts">
import { useTextareaAutosize
 } from '@vueuse/core'

const { textarea
, input
 } = useTextareaAutosize
({ styleProp
: 'minHeight' })
</script>

<template>
  <textarea

    ref
="textarea
"
    v-model
="input
"
    class
="resize-none"
    placeholder
="What's on your mind?"
    rows
="3"
  />
</template>

Type Declarations

Show Type Declarations

export interface UseTextareaAutosizeOptions extends ConfigurableWindow {
  /** Textarea element to autosize. */
  element
?: MaybeRef
<HTMLTextAreaElement | undefined | null>
  /** Textarea content. */
  input
?: MaybeRef
<string>
  /** Watch sources that should trigger a textarea resize. */
  watch
?: WatchSource
 | MultiWatchSources

  /** Function called when the textarea size changes. */
  onResize
?: () => void
  /** Specify style target to apply the height based on textarea content. If not provided it will use textarea it self.  */
  styleTarget
?: MaybeRef
<HTMLElement | undefined>
  /** Specify the style property that will be used to manipulate height. Can be `height | minHeight`. Default value is `height`. */
  styleProp
?: "height" | "minHeight"
}
export interface UseTextareaAutosizeReturn {
  textarea
: Ref
<HTMLTextAreaElement | undefined | null>
  input
: Ref
<string>
  triggerResize
: () => void
}
export declare function useTextareaAutosize
(
  options
?: UseTextareaAutosizeOptions,
): UseTextareaAutosizeReturn