[Typo3-dev] extension TCA question

[Mathias Schreiber [wmdb>]]

Kasper Skårhøj wrote:
> I imagined that a selector box for each "level" was present in the form
> and that the values and their "tree" were stored in JavaScript. So an
> update of a box on the first level will trigger a change of the content
> in the second box which in turn will change the content in the third box
> etc. Actually this is how the TypoScript JSMENUs work. Similar to that. 

Does this work with lots of data in the JS arrays?
Like 100 categories with 100 Subcategories each.

> This could be made with the "user" field type and thus you can implement
> this by an extension as proof of concept. Probably that is the best idea
> eventually!

Wilco