Ionic sidemnu having problem to apply $watch?

ionic-v1
1

My html

<input ng-model="query" type="text" placeholder="Search">

My js

.controller('setting', function($scope,$http) {
    $scope.query = null;
    $scope.$watch("query", function() {
        $scope.change();
    });
    $scope.change = function() {
      console.log($scope.query);
    };
})

I’ve tested $scope.$watch here : http://jsfiddle.net/m5bLryou/, but not sure why it doesn’t work with ionic.

2

maby try this: http://jsfiddle.net/H2EAB/