Q:

AngularJS: A page calls my angularjs-page with form POST data

How would it be to call an AngularJS page from a totally different, that is not mine, and the caller page uses POST with form-data. Is there needed for some special web server setup on my side, or can Angular handle this incoming POST request totally without any help from server side logic on my side (so my Angular-page can be served from anywhere, like a simple file server like Dropbox)?

A:

You mean angular page to angular page communication?
Angular runs in your browser, so what you want is client to client communication. You would have to build it around your server by yourself. The easiest way would be to use WebSockets.
client sends message to server -> server sends message to target client -> client receives the message
or
client sends message to server -> server stores the message and waits for client to pick it up -> client picks the message from server
If you mean page X calls your angular page via a POST request.
Your angular page communicates with the server all the time. So you should not try to catch the post request to your page inside angular (you can't anyways), you have to catch it on the server and the somehow load the appropriate page where your angular logic kicks in.
You cant catch post requests in your browser, only on your server.

