var xhr = new XMLHttpRequest();
xhr.open('GET', 'http://ywdv.caihcloud.com/const-zhgd-web/aibox/video/get?code=1dbb95850498433b81baf2bfbd849f85');
xhr.send(null);
xhr.onload = function(e) {
    var xhr = e.target;
    console.log(xhr.responseText);
}