In my application I made some computing server side with a Javascript interpreter. I'd like to take advantage from F12 debug engine in my browser chroome to let the user debug his scripts. To do that a generare a new page and open it in a new window

        var xhttp = new XMLHttpRequest();
        xhttp.open("POST", "/test/tipoManufatto", true);
        xhttp.setRequestHeader("Content-Type", "application/json");
        xhttp.onreadystatechange = function() {
            if (this.readyState == 4 && this.status == 200) {

                var new_window = window.open(null, '');
                new_window.document.write(this.responseText);

            }
        };
        xhttp.send(JSON.stringify($scope.tc.selected));

the page is generated correctly and the server side generated scripts runs fine but if get into F12 tools

I cannot see my script in the source tab therefore I cannot set any breakpoints.

Is there a better way to open a dynamically generated page in a new window? I need to generate the page from the back-end with a POST verb in order to send some data.

Here is what my network tabs looks like