count number of levels of iframe nesting in cross-site situation

If my page is buried several iframes deep, is it possible to count how many levels down I am (cross-domain)?

(I'm prett开发者_如何学Cy sure the answer is "no".)

No, I'm almost certain there's no way to do that.

You might try something like

var current = window;
while (current.parent != current) {
    current = current.parent;
}

, but I suspect you will fail with multiple domains, due to same origin policy.

Might be worth a shot, though. Maybe access is blocked to document contents only, and not to window object.

It's not the # of levels but in this way seems that you can identify if your content has been iframed more than once:

if (parent !== window) {
    //I'm iframed once for sure 
}
if (parent !== top) {
    //I'm iframed more than once
}

Tested with Chrome 59, Safari 10, Firefox 54, Edge 15, IE11