[Html-widget] FormFu custom element with javascript

[Mario Minati]

Hi Carl,

I got stuck during porting my similarity widget to the current api.

As I understand the code, the place to generate a custom javascript for the 
widget is in a custom render function, right?

My problem is now that I need the id of the widget to access it later via 
javascript, but prepare_id has not been called yet in the render function of 
Element.pm.

Is it possible to call prepare_id before creating the render object or would 
that mix something up? 
Or did I mix something up?

Greets,
Mario