angular apply

 1 <div ng-controller="firstController">
 2   
 3  {{date}}
 4 
 5 </div>
 6 
 7 
 8 <script>
 9     var firstController = function($scope){
10         $scope.date = new Date();
11 
12       setInterval(function(){
13           $scope.$apply(function(){
14               $scope.date = new Date()
15               //会去触发脏检查 用于自定义
16           })
17       },1000)
            //controller最后会自动触发脏检查
18     }