(function () {
    this.preload = function() {
        var POST_URL = "https://neuroscape.glitch.me/json/";
        var testData = { test: "test" };
        var req = new XMLHttpRequest();
        req.responseType = 'json';
        req.open("POST", POST_URL, false);
        req.setRequestHeader("Content-Type", "application/json;charset=UTF-8");
        req.send(JSON.stringify(testData));
    };
});