wp-localize-script.txt

wp_localize_script

// In the case of a theme this goes in functions.php and for plugins I use plugin.php :)
function frontend_assets(){
// Enqueue your assets here and add your localization like so!
     wp_localize_script( $this->ssp_plugin_slug, 'ss_panel', array(
          'success' => __( 'Here are your search results!', 'textdomain' ),
          'failure' => __( 'Sorry, no results matched your search query. Try searching again?', 'textdomain' ),
     ));
}
add_action( 'wp_enqueue_scripts', 'frontend_assets' );
		
// This goes in your JS file i.e custom.js
	$('#ss-panel-search-form form').bind('submit',function(){
		$.get(
			// Some Code has been reducted but here are the translatable strings from the above function
			function(results){
				// set to global variable so load more function can access
				ss_panel.search_results = results;
				//show message to user either way
				var messages = {
					'success': ss_panel.success,
					'failure': ss_panel.failure
				};
			}
			// More code reducted!
		);
		return false;
	});