One option I could think of is

1. As you get a model/object from service, create a replica of the model within the model and bind this new model to your view.




2. Add a watch on the new Model and as the model changes, use the replica to compare old and new models as follows

   
   
   

   var myModel = {
   
       property1: Property1,
   
       property2: Property2,
   
       array1:[1,2,3]
   
   }
   
   var getModel = function(myModel){
   
      var oldData = {};
   
      for(var prop in myModel){
   
         oldData.prop = myModel[prop];
   
      }
   
      myModel.oldData = oldData;
   
      return myModel;
   
   }
   
   var getPropChanged = function(myModel){
   
     var oldData = myModel.oldData;
   
     for(var prop in myModel){
   
      if(prop !== oldData){
   
       if(myModel[prop] !== oldData[prop]){
   
           return{
   
               propChanged: prop,
   
               oldValue:oldData[prop],
   
               newValue:myModel[prop]
   
           }
   
         }
   
       }
   
     }
   
   }