Angularjs 动态改变title标题(兼容ios)

<pre name="code" class="javascript">angular.module('myApp.loginCtrl', []) 
  .config(function($httpProvider) { 
    $httpProvider.defaults.headers.post['Content-Type']='application/x-www-form-urlencoded;charset=utf-8'; 
//改变header中content-type的格式 
  }) 
.controller('loginCtrl',['$scope','$http',function($scope,$http){}]) 
//兼容ios动态改变title标题 
.run(['$location','$rootScope',function($location, $rootScope){  
  $rootScope.$on('$stateChangeSuccess', function (event, toState, toParams, fromState, fromParams) {  
   $rootScope.title = toState.title  
  });  
  $rootScope.$watch('title',function(title){ 
    var body = document.getElementsByTagName('body')[0]; 
    document.title = title; 
    var iframe = document.createElement("iframe"); 
    iframe.title = '登陆'; 
    iframe.width = 0; 
    iframe.height = 0; 
    iframe.src = '//m.baidu.com/favicon.ico'; 
    iframe.style.display = 'none'; 
    iframe.addEventListener('load', function() { 
      setTimeout(function() { 
        // iframe.removeEventListener('load'); 
        document.body.removeChild(iframe); 
      }, 0); 
    }); 
    document.body.appendChild(iframe); 
  }); 
}]); </pre><br> 
<br> 
<pre></pre> 
<pre code_snippet_id="2083087" snippet_file_name="blog_20161229_4_8475823" name="code" class="javascript">//路由<pre name="code" class="javascript">  .state('deliciousFood',{ 
   title:'美食住宿', 
   url:'/deliciousFood', 
   templateUrl:'/hq/views/deliciousFood/deliciousFood.html', 
   controller:'deliciousFoodCtrl', 
   resolve:{ 
    loadMyCtrl:['$ocLazyLoad',function($ocLazyLoad){ 
     return $ocLazyLoad.load([ 
      '/hq/views/deliciousFood/deliciousFoodCtrl.js', 
      ]).then(function(){}) 
    }] 
   }  
  })</pre><br> 
<pre></pre> 
<br> 
</pre>