1var xhttp = new XMLHttpRequest();
2  xhttp.onreadystatechange = function() {
3    if (this.readyState == 4 && this.status == 200) {
4      return this.responseText;
5    }
6  };
7  xhttp.open("GET", "[your database]", true);
8  xhttp.send();
9
10
11//add the url of your database in the [your database] string.