Make the Event Categories' sub-categories expanded by default on the Community Events form

functions.php

<?php
/**
	* From https://gist.github.com/cliffordp/96c7522622380888b44bd19abed88897
	* 
	* Make the Event Categories' sub-categories expanded by default on the Community Events form
	* The initial CE form appears like this without this snippet in effect: http://cl.ly/3a0U430s1u3R
	* 
	*/
add_action( 'tribe_events_community_after_the_categories', 'cliff_tribe_community_events_form_taxonomies_expanded' );
function cliff_tribe_community_events_form_taxonomies_expanded() {
	?>
	<script>
		jQuery( document ).ready( function() {
			jQuery( "#tribe-community-events #event-categories ul.tribe-categories-with-children > li" ).addClass( "tribe-expanded" );
		});
	</script>
	<?php
}