奉上一个键盘按键值的获取思路。希望对大家有帮助。

const key = ref('')
const code = ref('')
const keyCode = ref('')
const modifiers = ref({ shiftKey: false, ctrlKey: false, altKey: false, metaKey: false })

function handleKeydown(event: any) {
  event.preventDefault() // 防止默认操作
  key.value = event.key
  code.value = event.code
  keyCode.value = event.keyCode
  modifiers.value = {
    shiftKey: event.shiftKey,
    ctrlKey: event.ctrlKey,
    altKey: event.altKey,
    metaKey: event.metaKey,
  }
}

function handleVirtualKeydown(key: any) {
  // 构造一个模拟的事件对象
  const event = {
    preventDefault: () => { }, // 空函数，因为没有默认行为需要阻止
    key: key.label,
    code: key.key,
    keyCode: key.code,
    shiftKey: false,
    ctrlKey: false,
    altKey: false,
    metaKey: false,
  }

  // 根据需要设置修饰键的状态
  // 例如，如果你的虚拟键盘允许模拟修饰键，你可以在这里设置它们的状态

  // 调用handleKeydown函数
  handleKeydown(event)
}

const activeKeys = ref<string[]>([])

function updateActiveKey(event: any, isActive: any) {
  // 防止重复添加相同的按键code
  if (isActive && !activeKeys.value.includes(event.code)) {
    activeKeys.value.push(event.code)
  }
  else if (!isActive) {
    const index = activeKeys.value.indexOf(event.code)
    if (index !== -1)
      activeKeys.value.splice(index, 1)
  }
}

onMounted(() => {
  window.addEventListener('keydown', handleKeydown)
  window.addEventListener('keydown', event => updateActiveKey(event, true))
  window.addEventListener('keyup', event => updateActiveKey(event, false))
})

onUnmounted(() => {
  window.removeEventListener('keydown', handleKeydown)
  window.removeEventListener('keydown', event => updateActiveKey(event, true))
  window.removeEventListener('keyup', event => updateActiveKey(event, false))
})