# .cadoles-slide-title[L'objet $scope (4/4)] **Observer les modifications du $scope** ```html <html> <body ng-app="myApp"> <div ng-controller="MainCtrl"> <input ng-model="message" /> </div> <script src="angular.js"></script> <script> var myApp = angular.module('myApp', []); myApp.controller('MainCtrl', ['$scope', function($scope) { $scope.message = ''; $scope.$watch('message', function(newVal, oldVal) { console.log('"message" a changé !', newVal, oldVal); }); }]); </script> </body> </html> ```