https://ccxmedia.org/wp-content/plugins/nds-advanced-search-master…/common/js/nds-advanced-search.js?ver=1.0.0

1( function( $ ) {
2	"use strict";
3
4	// HashMap for searched keys and their post titles.
5	var searchCache = {};
6
7	// track the currect AJAX request.
8	var sameAjaxRequest;
9
10	// get cached post titles from the params object of wp_localize_script.
11	var cachedPostTitles = ( false !== params.cached_post_titles && params.cached_post_titles.length ) ? params.cached_post_titles : false;
12
13	$( "#nds-advanced-search-form #nds-search-box" ).autocomplete({
14		delay: 300,
15		source: function( request, response ) {
16
17			// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/RegExp.
18			var matcher = new RegExp( $.ui.autocomplete.escapeRegex( request.term ), "i" );
19
20			var searchTitlesForSuggestions = function( searchTitles ) {
21
22				// function used to search the key in the post titles.
23				var suggestions = $.grep( searchTitles, function( item ) {
24									return matcher.test( item );
25								});
26
27				// cache the search term with its data in a hash map.
28				cachedPostTitles = searchTitles;
29				searchCache[request.term] = suggestions;
30
31				return suggestions;
32			};
33
34			// check if the search key was already cached in the HashMap.
35			if ( request.term in searchCache ) {
36
37				// return suggestions using the cache object.
38				response( searchCache[request.term] );
39
40				// exit and avoid an ajax call as we can use data that was cached in earlier ajax calls.
41				return;
42
43			} // else check if cached post tiles exists.
44			else if ( cachedPostTitles ) {
45
46				// cachedPostTitles array may have been set in previous AJAX call or inititally by wp_localize_script.
47				var searchSuggestions = searchTitlesForSuggestions( cachedPostTitles );
48
49				// return the suggestions for the search term.
50				response( searchSuggestions );
51
52				// exit and avoid an ajax call as we can use data that was cached in earlier ajax calls.
53				return;
54
55			}
56
57			// Else Make an AJAX Request.
58
59			// AJAX call is made if wp_localize_script sent an empty array for post titles.
60			sameAjaxRequest = $.ajax ({
61
62				url: params.ajaxurl, // domain/wp-admin/admin-ajax.php
63				type: "POST",
64				dataType: "json",
65				data: {
66					action: "nds_advanced_search_autosuggest",
67					ajaxRequest: "yes",
68					term: request.term
69				}
70			})
71
72				// on success.
73				.done( function( data, textStatus, jqXHR ) {
74
75					if ( jqXHR === sameAjaxRequest && null !== data && "undefined" !== typeof( data ) ) {
76
77						// data contains the post titles sent by the AJAX handler.
78						var searchSuggestions = searchTitlesForSuggestions( data );
79
80						// return the suggestions for the search term.
81						response( searchSuggestions );
82
83					}
84				})
85
86				// on failure.
87				.fail( function( xhr, status, errorThrown ) {
88
89					$( "#nds-search-box" ).css( "background-color", "yellow" );
90					$( "#nds-search-box" ).val( "An error occurred ..." );
91				})
92
93				// after all this time?
94				.always( function( xhr, status ) {
95				});
96
97
98		},
99		minLength: 3
100	});
101
102})( jQuery );