javascript - Angular $watch not triggered on field modifed by popup -

i have angular 1.4.x app launches popup window (for oauth stuff). @ point popup write value input field on main parent window/app. process works fine. have app run code once field updated seems when field updated popup $watch function never triggered. if put cursor in field , modify value works fine. issue?

the input field:

<input type="text" id="url" ng-model="item.url"> 

the controller watch bit:

$scope.$watch('item.url', function(n, o) {   console.log(n, o); }); 

the popup code writes parent:

var url = window.opener.document.getelementbyid("url").focus(); url.value = "hello"; 

note don't care if use input field - open other methods. need pass value angular app in simple manner (i.e. basic cross browser code without libs) , have go there - seems straightforward way.

try piece of code:

var opener = window.opener;  //replace 'controller-id' id of controller div var controllerdiv = opener.document.getelementbyid('controller-id'); var scope = opener.angular.element(controllerdiv).scope();  scope.title= 'hello';  //we update scope manually, have call scope.$digest();