Hello Everyone out there, who are facing difficulty to display the parent and child taxonomies in drop down, i found the solution for the above problem……
edit the code in the functions.php file,
before the code was
$categories= get_categories('child_of=".$_POST["main_catid'].'hide_empty=0');
now edit the code, like this…
$categories= get_categories('child_of=".$_POST["main_catid'].'&hide_empty=0'.'&taxonomy=state');
and this works so beautifully, try it for sure……all i did was i concatenated the taxonomy, that’s all
cheers everyone, happy coding….. 🙂