Using Auth0.js v8 in the Hosted Login Page

Within the Hosted Login page, you can use the the Auth0.js library, instead of Lock, to perform authentication using a custom UI. You can also use Auth0.js in addition to Lock, for authentication or user management tasks.

To do this, you'll need to provide all the parameters requested in config.internalOptions.

In this example, you'll build an authorization link that takes the user directly to a specific Connection using Auth0.js v8.

<a id="direct-link" href="">A direct link to the IdP</a>
<script src=""></script>
<script src=""></script>
<script src=""></script>

  // standard config decoding as in the default template
  var config = JSON.parse(decodeURIComponent(escape(window.atob('config'))));

  // builds an Auth0.js instance using config options
  var authClient = new auth0.Authentication({
    domain:       config.auth0Domain,
    clientID:     config.clientID,
    _disableDeprecationWarnings: true,
    redirectUri: config.callbackURL,
    responseType: config.extraParams.response_type ||
      config.callbackOnLocationHash ? 'token' : 'code'

  // build an authorize URL specifying a connection
  var buildDirectAuthUrl = function(connectionName) {
    // using lodash to extend config.internalOptions with the connectionName
    var options = _.extend({}, config.internalOptions, {
      connection: connectionName
    return authClient.buildAuthorizeUrl(options);

  window.getElementById('direct-link').href = buildDirectAuthUrl("my-idp-connection");