https://www.kinderlingkids.com/wp-content/plugins/supportingcast-v3.0.0.beta16/js/sc-ajax.js?ver=3.0.0-beta16

1var scajax = {};
2scajax.x = function () {
3    if (typeof XMLHttpRequest !== 'undefined') {
4        return new XMLHttpRequest();
5    }
6    var versions = [
7        "MSXML2.XmlHttp.6.0",
8        "MSXML2.XmlHttp.5.0",
9        "MSXML2.XmlHttp.4.0",
10        "MSXML2.XmlHttp.3.0",
11        "MSXML2.XmlHttp.2.0",
12        "Microsoft.XmlHttp"
13    ];
14
15    var xhr;
16    for (var i = 0; i < versions.length; i++) {
17        try {
18            xhr = new ActiveXObject(versions[i]);
19            break;
20        } catch (e) {
21        }
22    }
23    return xhr;
24};
25
26scajax.send = function (url, callback, method, data, async) {
27    if (async === undefined) {
28        async = true;
29    }
30    var x = scajax.x();
31    x.open(method, url, async);
32    x.onreadystatechange = function () {
33        if (x.readyState == 4) {
34            callback(x.responseText)
35        }
36    };
37    if (method == 'POST') {
38        x.setRequestHeader("Content-Type", "application/json;charset=UTF-8");
39    }
40    x.send(data)
41};
42
43scajax.get = function (url, data, callback, async) {
44    var query = [];
45    for (var key in data) {
46        query.push(encodeURIComponent(key) + '=' + encodeURIComponent(data[key]));
47    }
48    scajax.send(url + (query.length ? '?' + query.join('&') : ''), callback, 'GET', null, async)
49};
50
51scajax.post = function (url, data, callback, async) {
52    scajax.send(url, callback, 'POST', JSON.stringify(data), async)
53};