orderBy 是一个排序用的过滤器标签。它可以像 sort 函数那样支持一个排序函数，也可以简单地指定一个属性名进行操作：

<div ng-controller="TestCtrl">
  {{ data | orderBy: 'age' }} <br />
  {{ data | orderBy: '-age' }} <br />
  {{ data | orderBy: '-age' | limitTo: 2 }} <br />
  {{ data | orderBy: ['-age', 'name'] }} <br />
</div>


<script type="text/javascript">
angular.module('app', [], angular.noop)
.controller('TestCtrl', function($scope){
  $scope.data = [
    {name: 'B', age: 4},  
    {name: 'A', age: 1},  
    {name: 'D', age: 3},  
    {name: 'C', age: 3},  
  ];
});
angular.bootstrap(document.documentElement, ['app']);
</script>