Added login_hint to keycloak.js

docbook/reference/en/en-US/modules/javascript-adapter.xml

@@ -191,6 +191,7 @@ new Keycloak({ url: 'http://localhost/auth', realm: 'myrealm', clientId: 'myApp'
                     <itemizedlist>
                         <listitem>redirectUri - specifies the uri to redirect to after login</listitem>
                         <listitem>prompt - can be set to 'none' to check if the user is logged in already (if not logged in a login form is not displayed)</listitem>
+                        <listitem>loginHint - used to pre-fill the username/email field on the login form</listitem>
                     </itemizedlist>
                 </para>
             </simplesect>

integration/js/src/main/resources/keycloak.js

@@ -136,6 +136,10 @@
                 url += '&prompt=' + options.prompt;
             }
 
+            if (options && options.loginHint) {
+                url += '&login_hint=' + options.loginHint;
+            }
+
             return url;
         }