open new window, run a $scope function in that window, a better way

Question

So, I have two single page applications, these two apps both contain a list of items, in Application A we have List A, and in Application B we have List B.

an item in List A can be the parent for items in List B, one to many relations.

If a user clicks an item in App A, he gets the option to view related items, this will open up App B in a separate window (new tab), and filter List B to only show related items to the clicked item in App A.

This means I have to open a new window, and run a function when that window is ready, and pass the ID of the clicked item in order to filter my list.

$scope.openNewWindow = function(id){

    var popup = window.open('newPageUrl');

      // check to see when opened page is ready
    var readyStateCheckInterval = setInterval(function() {
        if (popup.document.readyState === "complete") {
            clearInterval(readyStateCheckInterval);
            // function on App B
            popup.functionToRunWhenReady(id);
        }
    }, 50);
};

The function, functionToRunWhenReady() is a javascript function, and has to run the actual function to filter my list, which is a $scope function, the reason is that I can't access the $scope function from my other application

function functionToRunWhenReady(id) {
    angular.element(document).ready(function () {

        var scope = angular.element($('#myAppDiv')).scope();

        scope.$apply(function() {
             // scope function to filter the list
            scope.setFilter(id);
        });
    });
}

As you can see here I check if document is ready, access the scope by doing var scope = angular.element($('#myAppDiv')).scope(); and then run my setFilter(id) function

This works, but I can't believe that this is the best way to go about this.

tl;dr How do I open a new window, then run a $scope function on the new application, in a way that is not bad practice?

Edit: I see people are suggesting $routeparams, but I don't really know how that works, or if it works in my apps (they are both single page apps), so further explanation of that would be great

Answer 1

Send ID as a GET parameter to Application B. You can then access it directly in controller without any delays using $routeParams.

Answer 2

In Application A, you don't need any special code to open a window. Just a target="blank" link in your markup.

<a href="http://applicationB_url/{{itemA.id}}/items" target="blank">{{itemA.name}}</a>

And then in Application B, depending on your router, use $stateParams (for ui router) or $routeParams to access the id in your controller.

If you want to run a function on startup, just check for the existence of the id in your Application B controller. Something like:

if($stateParams.id) {
   // do something
}