vk-groups-get-ajax

var xhr = new XMLHttpRequest();

var body = 'act=load_idols&al=1&oid=50595075';

xhr.open("POST", 'https://vk.com/al_fans.php', true)
xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded')

xhr.onreadystatechange = function() {
    if (this.readyState == 4 && this.status == 200) {
     console.log(this.responseText)
    }
  };

xhr.send(body);

// https://gist.github.com/lkLeonov/b891fa8d157b6d62ff625723c8684f27    UPDATED