https://www.buzzsneakers.sk/nb-public/themes/nbshop5_v5_8/_static/…/jquery.batchimageupload.js?ver=1008_7.1

1/**
2 *  Plugin which is applied on a list of img objects and calls
3 *  the specified callback function, only when all of them are loaded (or errored).
4 *  @author:  H. Yankov (hristo.yankov at gmail dot com)
5 *  @version: 1.0.0 (Feb/22/2010)
6 *	http://yankov.us
7 */
8
9(function($){
10
11    $.fn.batchImageLoad = function(options){
12        var images = $(this);
13        var originalTotalImagesCount = images.length;
14        var totalImagesCount = originalTotalImagesCount;
15        var elementsLoaded = 0;
16
17        // Init
18        $.fn.batchImageLoad.defaults = {
19            loadingCompleteCallback: null,
20            imageLoadedCallback: null
21        }
22        var opts = $.extend({}, $.fn.batchImageLoad.defaults, options);
23
24        // Start
25        images.each(function(){
26            // The image has already been loaded (cached)
27            if($(this)[0].complete){
28                totalImagesCount--;
29                if(opts.imageLoadedCallback)
30                    opts.imageLoadedCallback(elementsLoaded, originalTotalImagesCount);
31                // The image is loading, so attach the listener
32            } else {
33                $(this).load(function(){
34                    elementsLoaded++;
35
36                    if(opts.imageLoadedCallback)
37                        opts.imageLoadedCallback(elementsLoaded, originalTotalImagesCount);
38
39                    // An image has been loaded
40                    if(elementsLoaded >= totalImagesCount)
41                        if(opts.loadingCompleteCallback)
42                            opts.loadingCompleteCallback();
43                });
44                $(this).error(function(){
45                    elementsLoaded++;
46
47                    if(opts.imageLoadedCallback)
48                        opts.imageLoadedCallback(elementsLoaded, originalTotalImagesCount);
49
50                    // The image has errored
51                    if(elementsLoaded >= totalImagesCount)
52                        if(opts.loadingCompleteCallback)
53                            opts.loadingCompleteCallback();
54                });
55            }
56        });
57
58        // There are no unloaded images
59        if(totalImagesCount <= 0)
60            if(opts.loadingCompleteCallback)
61                opts.loadingCompleteCallback();
62    };
63})(jQuery);
64