On Thu, 14 Sep 2017 10:49:46 GMT, Suliman wrote:

Am I right understand that Web interface generator only for static sites that do not have any JS for creation JS objects?

It is certainly meant more for dynamic sites. There are two examples with dynamic frontend code (web_ajax, web_websocket), but they don't communicate with JSON. You can, however, also return Json from a method and it will be sent as JSON to the client and can be used with XHR requests to exchange objects.