myApp.controller(‘firstController‘,function($scope,$interval){
$scope.date = new Date();
setInterval(function(){
$scope.$apply(function(){
$scope.date = new Date();
})
},1000)
$scope.count = 0;
$scope.$watch("date",function(newValue,oldValue){
++$scope.count;
if($scope.count>5){
//alert("超过五次了")
}
})
$scope.$wach("name",function(newValue,oldValue){})
angularjs $scope.$watch(),监听值得变化
原文：http://www.cnblogs.com/xqschool/p/6237076.html