VueUse
{
  "isLeft": false
}

usePageLeave

Reactive state to show whether the mouse leaves the page.

Usage 

import { usePageLeave } from '@vueuse/core'

const isLeft = usePageLeave()

Component 

<UsePageLeave v-slot="{ isLeft }">
  Has Left Page: {{ isLeft }}
<UsePageLeave>

Type Declarations 

/**
 * Reactive state to show whether mouse leaves the page.
 *
 * @see https://vueuse.org/usePageLeave
 * @param options
 */
export declare function usePageLeave(options?: ConfigurableWindow): Ref<boolean>

Source

Source • Demo • Docs