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useMutationObserver

Category	Elements
Export Size	612 B
Last Changed	9 months ago

Usage

import { ref } from 'vue'
import { useMutationObserver } from '@vueuse/core'

export default {
  setup() {
    const el = ref(null)
    const messages = ref([])

    useMutationObserver(el, (mutations) => {
      if (mutations[0])
        messages.value.push(mutations[0].attributeName)
    }, {
      attributes: true,
    })

    return {
      el,
      messages,
    }
  },
}

Type Declarations

export interface UseMutationObserverOptions
  extends MutationObserverInit,
    ConfigurableWindow {}
/**
 * Watch for changes being made to the DOM tree.
 *
 * @see https://vueuse.org/useMutationObserver
 * @see https://developer.mozilla.org/en-US/docs/Web/API/MutationObserver MutationObserver MDN
 * @param target
 * @param callback
 * @param options
 */
export declare function useMutationObserver(
  target: MaybeElementRef,
  callback: MutationCallback,
  options?: UseMutationObserverOptions
): {
  isSupported: ComputedRef<boolean>
  stop: () => void
}
export type UseMutationObserverReturn = ReturnType<typeof useMutationObserver>

Source

Source • Demo • Docs