### Register and Listen to Auth0 Events

Source: https://github.com/auth0/auth0-analytics.js/blob/master/tests/app/index.html

Defines functions to register events by appending them to a list and to start listening to specific Auth0 events. The 'authenticated' event is always listened to by default.

```javascript
function registerEvent(e, name) {
  $('#events').append('<li id="event_' + name.replace(/\s+/, '-') + '">' + name + '</li>')
}

function listenToEvent(name) {
  $('#listening_to').append('<li>' + name + '</li>')
  lock.on(name, function (e) {
    registerEvent(e, name)
  });
}

// Always listen to authenticated in order to avoid
// missing it when we need to test it.
listenToEvent('authenticated');
```

--------------------------------

### Initialize Auth0 Analytics with Facebook Integration

Source: https://github.com/auth0/auth0-analytics.js/blob/master/tests/app/index.html

Configure Auth0 Analytics with specific options for Facebook Analytics, including the Facebook App ID. This setup is typically done once at the application's initialization.

```javascript
window.auth0AnalyticsOptions = { 'facebook-analytics': { id: '586886298182936' } }
```

--------------------------------

### Initialize Auth0 Lock and Handle Sign-In

Source: https://github.com/auth0/auth0-analytics.js/blob/master/example/basic.html

Sets up Auth0 Lock with your domain and client ID, and attaches a click listener to a login button to trigger the authentication flow. It also includes an event listener for successful authentication to retrieve user profile information.

```javascript
window.auth0AnalyticsOptions = { 'facebook-analytics': { id: '586886298182936' } }  Sign In var lock = new Auth0Lock('KekpkLNApjTN38mmTJu6XPxNqVB47DVG', 'ntotten-dev.auth0.com'); var btn_login = document.getElementById('btn-login'); btn_login.addEventListener('click', function() { lock.show(); }); lock.on("authenticated", function(authResult) { lock.getUserInfo(authResult.idToken, function(error, profile) { if (error) { // Handle error return; } localStorage.setItem('id_token', authResult.idToken); console.log(profile); }); });
```

--------------------------------

### Initialize Auth0 Lock and Show Login

Source: https://github.com/auth0/auth0-analytics.js/blob/master/example/preload.html

Initializes Auth0 Lock with your domain and client ID, and sets up an event listener to display the login modal when a button is clicked.

```javascript
var lock = new Auth0Lock('KekpkLNApjTN38mmTJu6XPxNqVB47DVG', 'ntotten-dev.auth0.com');
var btn_login = document.getElementById('btn-login');
btn_login.addEventListener('click', function() {
  lock.show();
});
```

--------------------------------

### Initialize Auth0Lock and Trigger Login

Source: https://github.com/auth0/auth0-analytics.js/blob/master/tests/app/index.html

Instantiate Auth0Lock with your domain and client ID, and attach an event listener to a button to trigger the login modal. Ensure the DOM element with ID 'btn-login' exists.

```javascript
var lock = new Auth0Lock('B-md5qIAOVqxwrmk9n-fHTe3ad5nnnrN', 'analytics-testing.auth0.com');
var btn_login = document.getElementById('btn-login');
btn_login.addEventListener('click', function() {
  lock.show();
});
```

--------------------------------

### Initialize Facebook SDK and Log Page View

Source: https://github.com/auth0/auth0-analytics.js/blob/master/example/preload.html

Initializes the Facebook SDK with your application ID and logs a page view event. This snippet should be included when preloading Facebook analytics.

```javascript
window.fbAsyncInit = function() {
  FB.init({
    appId : '586886298182936',
    xfbml : true,
    version : 'v2.8'
  });
  FB.AppEvents.logPageView();
};

(function(d, s, id){
  var js, fjs = d.getElementsByTagName(s)[0];
  if (d.getElementById(id)) {return;}
  js = d.createElement(s);
  js.id = id;
  js.src = "//connect.facebook.net/en_US/sdk.js";
  fjs.parentNode.insertBefore(js, fjs);
}(document, 'script', 'facebook-jssdk'));
```

--------------------------------

### Configure Facebook Analytics with Preloaded SDK

Source: https://github.com/auth0/auth0-analytics.js/blob/master/README.md

If the Facebook JS SDK is already on your page, set 'preloaded: true' in the options to use the existing SDK.

```javascript
window.auth0AnalyticsOptions = {
  'facebook-analytics': {
    preloaded: true
  }
}
```

--------------------------------

### Include Auth0 Analytics.js Scripts

Source: https://github.com/auth0/auth0-analytics.js/blob/master/README.md

Include these script tags in your HTML to load Auth0 Lock and the Analytics.js library. Ensure you replace 'X.Y.Z' with the latest release version.

```html
<script src="https://cdn.auth0.com/js/lock/11.0.0/lock.min.js"></script>
<script src="https://cdn.auth0.com/js/analytics/X.Y.Z/analytics.min.js"></script>
```

--------------------------------

### Handle Authentication Callback with Auth0 Lock

Source: https://github.com/auth0/auth0-analytics.js/blob/master/example/preload.html

Handles the 'authenticated' event from Auth0 Lock. It retrieves the user's ID token and profile information, storing the token in local storage.

```javascript
lock.on("authenticated", function(authResult) {
  lock.getUserInfo(authResult.idToken, function(error, profile) {
    if (error) {
      // Handle error
      return;
    }
    localStorage.setItem('id_token', authResult.idToken);
    console.log(profile);
  });
});
```

--------------------------------

### Configure Facebook Analytics

Source: https://github.com/auth0/auth0-analytics.js/blob/master/README.md

Set window.auth0AnalyticsOptions before loading the analytics script to configure Facebook Analytics with your App ID.

```javascript
window.auth0AnalyticsOptions = {
  'facebook-analytics': {
    id: 'YOUR_FACEBOOK_APP_ID'
  }
}
```

--------------------------------

### Preload Facebook Analytics

Source: https://github.com/auth0/auth0-analytics.js/blob/master/example/preload.html

Configure Auth0 Analytics to preload Facebook analytics. This is useful for applications that require Facebook's SDK to be available early.

```javascript
window.auth0AnalyticsOptions = { 'facebook-analytics': { preloaded: true } }
```

=== COMPLETE CONTENT === This response contains all available snippets from this library. No additional content exists. Do not make further requests.