Originally Posted by Old Pedant
One problem with this is that the loading (assignment to the src) will be *synchronous*.
As I test I put a little loop into my message board code that took the contents of a changing element and stored the
of it into a localStorage object named "test".
Then I had another tiny program (same browser, same computer, different "website") reading that same object and writing it's content to the
of an empty DIV.
Both "server" and "client" were running inside a
loop of 1000 msec.
I was able to watch the div on the message board "live" with the other window (albeit with a short delay).
Of course, this won't work on different MACHINES, but to watch what's going on in one WINDOW inside another WINDOW, it works fine and as I understand it, that's what the OP wanted....