Nuxt/docs/3.api/3.utils/on-before-route-leave.md

---
title: "onBeforeRouteLeave"
description: The onBeforeRouteLeave composable allows registering a route guard within a component.
links:
  - label: Source
    icon: i-simple-icons-github
    to: https://github.com/nuxt/nuxt/blob/main/packages/nuxt/src/app/composables/router.ts
    size: xs
---

:read-more{icon="i-simple-icons-vuedotjs" to="https://router.vuejs.org/api/#onBeforeRouteLeave" title="Vue Router Docs" target="_blank"}