I think that what you need to do is find where your custom meta data is displayed and do this:
echo jqFootnotes(get_post_meta($post_id, $key, $single));
That will run the jqFootnotes
filter on your post meta, and I think that will do what you need (assuming that $post_id
, $key
, and $single
are set appropriately)..
Side note: just because there is a the_content()
function and a the_content
filter doesn’t mean that you can use any function name as a filter. Most functions do not have a matching filter.
For reference: http://codex.wordpress.org/Function_Reference/apply_filters