Before we can begin to access authentication state, the Corbado.load() call has to resolve. Find more here.

​
One-time access to Authentication State

If you want to access user state once, you can simply call Corbado.sessionToken, Corbado.user or Corbado.isAuthenticated to get the current user state.

routes/+page.svelte
<script lang="ts">
    import Corbado from '@corbado/web-js';
    import { onMount } from 'svelte';

    onMount(async () => {
        const resp = await fetch("https://acme.com/api", {
            headers: {
                // access the users session token once
                Authorization: `Bearer ${Corbado.sessionToken}`
            }
        })
        // process result
    });
</script>

<div>
<!--Content-->
</div>

​
Subscribing to Authentication State

If you want to synchronize user state to your own state, you can subscribe to the authStateChanges and userChanges observables.

routes/+page.svelte
<script lang="ts">
    import Corbado from '@corbado/web-js';
    import {isCorbadoLoaded} from "../corbadoStore";
    import type {SessionUser} from "@corbado/types";
    import {onDestroy} from "svelte";
    import {Subscription} from "rxjs"

    let loggedIn = false;
    let user: SessionUser | undefined;

    let authStateSubscription: Subscription;
    let userSubscription: Subscription;

    $: if ($isCorbadoLoaded) {
        authStateSubscription = Corbado.authStateChanges.subscribe(
            next => loggedIn = next === 1
        );
        userSubscription = Corbado.userChanges.subscribe(next => user = next);
    }

    onDestroy(() => {
        authStateSubscription?.unsubscribe();
        userSubscription?.unsubscribe();
    });
</script>

<div>
    {#if loggedIn}
        <h1>Welcome, {user?.email}!</h1>
    {:else}
        <h1>Log in to see your profile</h1>
    {/if}
</div>

​
Logout

You can log out the user by calling Corbado.logout.

routes/+page.svelte
<script lang="ts">
    import Corbado from '@corbado/web-js';
</script>

<button on:click={Corbado.logout}>
    Logout
</button>

​
Next

Access user information on the server-side of your application.