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useTextareaAutosize

类别
导出大小
779 B
最后更改
5 天前

根据内容自动更新 textarea 的高度。

演示

输入文本,textarea 将会增长

用法

简单示例

vue
<script setup lang="ts">
const { textarea, input } = useTextareaAutosize()
</script>

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

注意

建议重置 textarea 元素的滚动条样式,以避免大量文本时高度值不正确。

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

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

使用 rows 属性

如果需要在 textarea 元素上支持 rows 属性,则应将 styleProp 选项设置为 minHeight

vue
<script setup lang="ts">
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>

类型声明

显示类型声明
typescript
export interface UseTextareaAutosizeOptions extends ConfigurableWindow {
  /** Textarea element to autosize. */
  element?: MaybeRef<HTMLTextAreaElement | undefined>
  /** Textarea content. */
  input?: MaybeRef<string>
  /** Watch sources that should trigger a textarea resize. */
  watch?: WatchSource | Array<WatchSource>
  /** 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 declare function useTextareaAutosize(
  options?: UseTextareaAutosizeOptions,
): {
  textarea: Ref<
    HTMLTextAreaElement | undefined,
    HTMLTextAreaElement | undefined
  >
  input: Ref<string, string>
  triggerResize: () => void
}
export type UseTextareaAutosizeReturn = ReturnType<typeof useTextareaAutosize>

源代码

源代码演示文档

贡献者

Anthony Fu
IlyaL
Anthony Fu
axuj
Mutter
huiliangShen
yakudik
leex
JD Solanki
Dominik Pschenitschni
Jelf
Enzo Innocenzi

更新日志

v12.8.0 on 3/5/2025
7432f - feat(types): deprecate MaybeRef and MaybeRefOrGetter in favor of Vue's native (#4636)
v12.7.0 on 2/15/2025
e1a7e - fix: improve resize handling with requestAnimationFrame (#4557)
v12.3.0 on 1/2/2025
59f75 - feat(toValue): deprecate toValue from @vueuse/shared in favor of Vue's native
v12.1.0 on 12/22/2024
25ed2 - fix: make input required (#4129)
v12.0.0-beta.1 on 11/21/2024
0a9ed - feat!: drop Vue 2 support, optimize bundles and clean up (#4349)
v11.0.0-beta.2 on 7/17/2024
06c6f - fix: improve triggerResize triggering (#4074)
v10.10.0 on 5/27/2024
a6ede - fix: onResize callback fires not only on resize (#3887)
v10.8.0 on 2/20/2024
5025e - feat: allow configuring styleProp to support native rows attribute (#3552)
v10.2.0 on 6/16/2023
1b0ec - fix: autosize error when changing input asynchronously (#3118)
v10.0.0-beta.0 on 3/14/2023
a3e95 - feat: added styleTarget option to style other element (#2312)

在 MIT 许可证下发布。