onKeyStroke

类别

传感器

导出大小

702 B

最后更改

5 天前

监听键盘按键。

演示

源代码

使用方向键或 w a s d 键来控制球的移动。

在键 `d` 或 `->` 上重复的事件将被忽略。

用法

import { onKeyStroke } from '@vueuse/core'

onKeyStroke('ArrowDown', (e) => {
  e.preventDefault()
})

查看此表以查看所有键代码。

监听多个键

import { onKeyStroke } from '@vueuse/core'

onKeyStroke(['s', 'S', 'ArrowDown'], (e) => {
  e.preventDefault()
})

// listen to all keys by [true / skip the keyDefine]
onKeyStroke(true, (e) => {
  e.preventDefault()
})
onKeyStroke((e) => {
  e.preventDefault()
})

自定义事件目标

onKeyStroke('A', (e) => {
  console.log('Key A pressed on document')
}, { target: document })

忽略重复事件

当按下 A 并保持按住时，回调将只触发一次。

import { onKeyStroke } from '@vueuse/core'

// use `autoRepeat` option
onKeyStroke('A', (e) => {
  console.log('Key A pressed')
}, { dedupe: true })

参考：KeyboardEvent.repeat

指令用法

此函数还通过 @vueuse/components 包提供了一个指令版本。了解更多关于用法的信息。

vue

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

function onUpdate(e: KeyboardEvent) {
  // impl...
}
</script>

<template>
  <input v-on-key-stroke:c,v="onUpdate" type="text">
  <!-- with options -->
  <input v-on-key-stroke:c,v="[onUpdate, { eventName: 'keyup' }]" type="text">
</template>

自定义键盘事件

onKeyStroke('Shift', (e) => {
  console.log('Shift key up')
}, { eventName: 'keyup' })

或者

onKeyUp('Shift', () => console.log('Shift key up'))

简写

onKeyDown - onKeyStroke(key, handler, {eventName: 'keydown'}) 的别名
onKeyPressed - onKeyStroke(key, handler, {eventName: 'keypress'}) 的别名
onKeyUp - onKeyStroke(key, handler, {eventName: 'keyup'}) 的别名

类型声明

显示类型声明

typescript

export type KeyPredicate = (event: KeyboardEvent) => boolean
export type KeyFilter = true | string | string[] | KeyPredicate
export type KeyStrokeEventName = "keydown" | "keypress" | "keyup"
export interface OnKeyStrokeOptions {
  eventName?: KeyStrokeEventName
  target?: MaybeRefOrGetter<EventTarget | null | undefined>
  passive?: boolean
  /**
   * Set to `true` to ignore repeated events when the key is being held down.
   *
   * @default false
   */
  dedupe?: MaybeRefOrGetter<boolean>
}
/**
 * Listen for keyboard keystrokes.
 *
 * @see https://vueuse.org.cn/onKeyStroke
 */
export declare function onKeyStroke(
  key: KeyFilter,
  handler: (event: KeyboardEvent) => void,
  options?: OnKeyStrokeOptions,
): () => void
export declare function onKeyStroke(
  handler: (event: KeyboardEvent) => void,
  options?: OnKeyStrokeOptions,
): () => void
/**
 * Listen to the keydown event of the given key.
 *
 * @see https://vueuse.org.cn/onKeyStroke
 * @param key
 * @param handler
 * @param options
 */
export declare function onKeyDown(
  key: KeyFilter,
  handler: (event: KeyboardEvent) => void,
  options?: Omit<OnKeyStrokeOptions, "eventName">,
): () => void
/**
 * Listen to the keypress event of the given key.
 *
 * @see https://vueuse.org.cn/onKeyStroke
 * @param key
 * @param handler
 * @param options
 */
export declare function onKeyPressed(
  key: KeyFilter,
  handler: (event: KeyboardEvent) => void,
  options?: Omit<OnKeyStrokeOptions, "eventName">,
): () => void
/**
 * Listen to the keyup event of the given key.
 *
 * @see https://vueuse.org.cn/onKeyStroke
 * @param key
 * @param handler
 * @param options
 */
export declare function onKeyUp(
  key: KeyFilter,
  handler: (event: KeyboardEvent) => void,
  options?: Omit<OnKeyStrokeOptions, "eventName">,
): () => void