如何在angularjs中更新标题中的navbar

Question

我的导航栏更新存在问题...使用我的凭据登录后我的导航栏没有更新..但是我的响应是成功的..但是如何更新更改我的标题..必须在登录后显示注销。 .Her是我的Html代码。如何为此编写身份验证..请帮帮我。我已经完成了我的项目..

<div ng-controller="NavbarCtrl" class="navbar navbar-default navbar-static-top" id="header">
<div class="container">
    <div class="navbar-header">
        <button type="button" data-toggle="collapse" data-target="#navbar" class="navbar-toggle collapsed">
            <span class="sr-only">Toggle navigation</span>
            <span class="icon-bar"></span>
            <span class="icon-bar"></span>
            <span class="icon-bar"></span>
        </button>
        <a class="navbar-brand" href="#/"><i class="ion-ios7-pulse-strong">Onio</i><img src="images/onio1.png"/></a>
    </div>
    <div id="navbar" class="navbar-collapse collapse">
        <ul ng-if="isAuthenticated()" class="nav navbar-nav">
            <li><a href="#/">Home</a></li>
            <li ><a href="#/about">About</a></li>
            <li ><a href="#/products">Products</a></li>
        </ul>
        <ul ng-if="!isAuthenticated()" class="nav navbar-nav pull-left">
            <li><a href="#/">Home</a></li>
            <li ><a href="#/about">About</a></li>
        </ul>
        <ul ng-if="!isAuthenticated()" class="nav navbar-nav pull-right">
            <li><a href="#/login">Login</a></li>
            <li><a href="#/signup">Sign up</a></li>
        </ul>
        <ul ng-if="isAuthenticated()" class="nav navbar-nav pull-right">
            <li><a href="#/logout">Logout</a></li>
            <li><a href="#" data-toggle="dropdown" class="navbar-avatar dropdown-toggle">Welcome, {{userInfo}}
            </a></li>
        </ul>

        <!--<ul ng-if="!isAuthenticated()" class="nav navbar-nav pull-right">-->
        <!--&lt;!&ndash;<li><button class="btn btn-facebook" ng-click="fbLogoutUser()">FBLogOut</button></li>&ndash;&gt;-->
        <!--<li class="fb-login-button" data-max-rows="1" ng-click="FBLogin()" data-size="large" data-show-faces="false"> </li>-->
        <!--</ul>-->
    </div>
</div>