Nuxt/docs/content/3.api/1.composables/on-before-route-leave.md

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---
title: "onBeforeRouteLeave"
description: The onBeforeRouteLeave composable allows registering a route guard within a component.
---
# `onBeforeRouteLeave`
The `onBeforeRouteLeave` composable adds a navigation guard that triggers whenever the component for the current location is about to be left.
::ReadMore{link="https://router.vuejs.org/api/index.html#onbeforerouteleave"}
::