useActiveElement

Reactive document.activeElement. Returns a shallow ref that updates when focus changes.

Usage

vue

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

const activeElement = useActiveElement()

watch(activeElement, (el) => {
  console.log('focus changed to', el)
})
</script>

Shadow DOM Support

By default, useActiveElement will traverse into shadow DOM to find the deeply active element. Set deep: false to disable this behavior.

import { useActiveElement } from '@vueuse/core'

// Only get the shadow host, not the element inside shadow DOM
const activeElement = useActiveElement({ deep: false })

Track Element Removal

Set triggerOnRemoval: true to update the active element when the currently active element is removed from the DOM. This uses a MutationObserver under the hood.

import { useActiveElement } from '@vueuse/core'

const activeElement = useActiveElement({ triggerOnRemoval: true })

Component Usage

vue

<template>
  <UseActiveElement v-slot="{ element }">
    Active element is {{ element?.dataset.id }}
  </UseActiveElement>
</template>