useMutationObserver
监视对 DOM 树的变更。MutationObserver MDN
示例
用法
vue
<script setup lang="ts">
import { useMutationObserver } from '@vueuse/core'
import { ref, useTemplateRef } from 'vue'
const el = useTemplateRef('el')
const messages = ref([])
useMutationObserver(el, (mutations) => {
if (mutations[0])
messages.value.push(mutations[0].attributeName)
}, {
attributes: true,
})
</script>
<template>
<div ref="el">
Hello VueUse
</div>
</template>类型声明
ts
export interface UseMutationObserverOptions
extends MutationObserverInit,
ConfigurableWindow {}
/**
* 监视对 DOM 树的变更
*
* @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:
| MaybeComputedElementRef
| MaybeComputedElementRef[]
| MaybeRefOrGetter<MaybeElement[]>,
callback: MutationCallback,
options?: UseMutationObserverOptions,
): {
isSupported: ComputedRef<boolean>
stop: () => void
takeRecords: () => MutationRecord[] | undefined
}
export type UseMutationObserverReturn = ReturnType<typeof useMutationObserver>源码
贡献者
一纸忘忧