Nuxt/docs/3.api/2.composables/use-runtime-hook.md

title	description	links
useRuntimeHook	Registers a runtime hook in a Nuxt application and ensures it is properly disposed of when the scope is destroyed.	label icon to size Source i-simple-icons-github https://github.com/nuxt/nuxt/blob/main/packages/nuxt/src/app/composables/runtime-hook.ts xs

::important This composable is available in Nuxt v3.14+. ::

function useRuntimeHook<THookName extends keyof RuntimeNuxtHooks>(
  name: THookName,
  fn: RuntimeNuxtHooks[THookName] extends HookCallback ? RuntimeNuxtHooks[THookName] : never
): void

Usage

Parameters

• name: The name of the runtime hook to register. You can see the full list of runtime Nuxt hooks here.
• fn: The callback function to execute when the hook is triggered. The function signature varies based on the hook name.

Returns

The composable doesn't return a value, but it automatically unregisters the hook when the component's scope is destroyed.

Example

<script setup lang="ts">
// Register a hook that runs every time a link is prefetched, but which will be
// automatically cleaned up (and not called again) when the component is unmounted
useRuntimeHook('link:prefetch', (link) => {
  console.log('Prefetching', link)
})
</script>