Dear Shahriar,
I’ve followed your advises from this thread in order to populate the default list and the drop-down with a specific category’s sub-categories (see attached). However, after the page, containing the shorcode, is being updated, the frontend crashes (also see attached).
If I go back to the page in the admin area, delete/edit the ‘category=”14″‘, save the page, than write again ‘category=”14″‘, the frontend form works normally. But once I edit the page, the form crashes again.
Both when crashed and when working normally, the Element Inspector doesn’t show any JS errors.
Please advise what can be done to ensure that nothing crashes. Thanks.
Anton