添加类元素，当内容加载angularjs

Question

我想一个类添加到.container元素时angularjs应用程序的内容加载：

我的代码部分如下，我怎么能做到这一点，不知道它是如何完成的？

HTML

<div class="container " ng-view> 
.. 

JS

**app.controller('ShowImages', function($scope, InstagramAPI){ 
    $scope.layout = 'grid'; 
    $scope.data = {}; 
    $scope.pics = []; 


    InstagramAPI.fetchPhotos(function(data){ 
     $scope.pics = data; 
     console.log("length is "+data.length) 
    }); 
    });** 

Answer 1

我建议

<div class="container" data-ng-class="{ 'yourcustomclass': pics.length > 0 }"></div> 

Answer 2

只是这样做：

<div class="container" ng-class="{'customclass' : pics.length > 0}"></div>