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import { StytchClient } from '@stytch/vanilla-js';

const stytch = new StytchClient('${publicToken}');

const unsubscribe = stytch.session.onChange((session) => {
  if (session) {
    console.log('Session found:', session.session_id);
  } else {
    console.log('No active session');
  }
});

window.addEventListener('beforeunload', () => {
  unsubscribe();
});

Documentation Index

Fetch the complete documentation index at: https://stytch.com/docs/llms.txt

Use this file to discover all available pages before exploring further.

The Stytch SDK caches the Session of the logged-in . Use the session.onChange method to listen for and react to changes to the Session object.

​
Parameters

​
callback
function
The callback function to call when the session changes. The first parameter is the updated Session object.

​
Return value

​
unsubscribe
function
The function to call to unsubscribe from the Session change event.