jobs-customize.php

$shortcode = '[jobs ';
if(isset($_GET['job_listing_category']) && $_GET['job_listing_category'] != ''){
	echo '<p><a href="'. get_permalink(get_option('job_manager_jobs_page_id')).'" class="button btn">&larr; Back to All Job Listings</a></p>';
	echo '<h3>'.ucwords(str_replace('-',' ',sanitize_text_field($_GET['job_listing_category']))).'</h3>';
	$shortcode.= 'categories="'.sanitize_text_field($_GET['job_listing_category']).'" ';
}
$shortcode.= ']';
echo do_shortcode($shortcode);
echo "
<script>
jQuery(document).ready(function($){
	var jobListingsPageURL = '".get_permalink(get_option('job_manager_jobs_page_id'))."';
	if(window.location.href === jobListingsPageURL){ // If on the main job listings page (no URL parameters or anything making it potentially showing something other than the intial job listing search page content)
		window.sessionStorage.removeItem('job_listing_' + $('div.job_listings').data( 'post_id' ) + '_' + $( 'div.job_listings' ).index( $('div.job_listings') )); // Clear session storage to avoid persistent job filter data from being used when it should be a clean state (based on the session storage/clearing/etc. behavior from https://github.com/Automattic/WP-Job-Manager/blob/master/assets/js/ajax-filters.js)
		$('div.job_listings ul.job_listings').hide(); // Hide the results initially (wait for a search to occur before showing results)
		var initialDisplaySuppresed = false; // The first attempt at showing the results (via update_results) hasn't been suppressed yet
		$( 'div.job_listings' ).on( 'update_results', function(){ // A search has been made
			if(initialDisplaySuppresed){ // Only have the first update_results trigger keep hidden while the subsequent ones should display their results as expected
				$('div.job_listings ul.job_listings').show(); // Show the results
			}
			initialDisplaySuppresed = true; // The first attempt was suppressed
		});
	}
});
</script>
";