Permission denied when trying to change browser window title

Question

I have a servlet that generates a PDF and the output goes to a new browser window. I am attempting to replace the title of that new window using the updateTitle() function below. However, when I try to assign the report name (repName) to the window instance, IE11 throws a "Permission denied" error. Any ideas?

function showReport(url, repName){

    var repWin = window.open(url);
    updateTitle(repWin, repName)
}

function updateTitle(repWin, repName) {
    setTimeout(function() {
        repWin.document.title = repName; //IE11 console throws PERMISSION DENIED here
    }, 3000);
}

Answer 1

You will need to use something like postMessage .

On your original window:

function showReport(url, repName) {
   var repWin = window.open(url);
   repWin.postMessage('setTitle:' + repName, '*');
}

On the repWin :

function updateTitle(message) {
    var m = message.data.split(':'),
        eventType = m[0],
        data = m[1];
    if (message.origin ===  'YOUR_URL_HERE' && eventType === 'setTitle' ) {
         repWin.document.title = data; 
    }
}

window.addEventListener("message", updateTitle, false);

Note: This will obviously only work if you can modify the source for the window you are opening.