In the following example, the isLoaded property checks if Clerk has finished initializing and the isSignedIn property checks if the user is signed in in order to protect the page.

<script setup>
const { isSignedIn, isLoaded, userId } = useAuth()
</script>

<template>
  <!-- Use `isLoaded` to check if Clerk is loaded -->
  <div v-if="!isLoaded">Loading...</div>
  <!-- Use `isSignedIn` to check if the user is signed in -->
  <div v-else-if="!isSignedIn">Sign in to access this page</div>
  <!-- Use `userId` to access the current user's ID -->
  <div v-else>Hello, {{ userId }}!</div>
</template>