https://mabia-vp.com/vendor_bundled/vendor/jquery-plugins/async/jquery.async.js

1/*
2 * jQuery Asynchronous Plugin 1.0 RC1
3 *
4 * Copyright (c) 2008 Vincent Robert (genezys.net)
5 * Dual licensed under the MIT (MIT-LICENSE.txt)
6 * and GPL (GPL-LICENSE.txt) licenses.
7 *
8 */
9(function($){
10
11// opts.delay : (default 10) delay between async call in ms
12// opts.bulk : (default 500) delay during which the loop can continue synchronously without yielding the CPU
13// opts.test : (default true) function to test in the while test part
14// opts.loop : (default empty) function to call in the while loop part
15// opts.end : (default empty) function to call at the end of the while loop
16$.whileAsync = function(opts)
17{
18	var delay = Math.abs(opts.delay) || 10,
19		bulk = isNaN(opts.bulk) ? 500 : Math.abs(opts.bulk),
20		test = opts.test || function(){ return true; },
21		loop = opts.loop || function(){},
22		end  = opts.end  || function(){};
23	
24	(function(){
25
26		var t = false, 
27			begin = new Date();
28			
29		while( t = test() )
30		{
31			loop();
32			if( bulk === 0 || (new Date() - begin) > bulk )
33			{
34				break;
35			}
36		}
37		if( t ) 
38		{
39			setTimeout(arguments.callee, delay);
40		}
41		else
42		{
43			end();
44		}
45		
46	})();
47}
48
49// opts.delay : (default 10) delay between async call in ms
50// opts.bulk : (default 500) delay during which the loop can continue synchronously without yielding the CPU
51// opts.loop : (default empty) function to call in the each loop part, signature: function(index, value) this = value
52// opts.end : (default empty) function to call at the end of the each loop
53$.eachAsync = function(array, opts)
54{
55	var i = 0, 
56		l = array.length, 
57		loop = opts.loop || function(){};
58	
59	$.whileAsync(
60		$.extend(opts, {
61			test: function(){ return i < l; },
62			loop: function()
63			{ 
64				var val = array[i];
65				return loop.call(val, i++, val);
66			}
67		})
68	);
69}
70
71$.fn.eachAsync = function(opts)
72{
73	$.eachAsync(this, opts);
74	return this;
75}
76
77})(jQuery)