Subsonic: export playlists from chrome

javascript: (function () {

    var server = prompt("Subsonic Server URL (don't include http://)", "localhost:4040");
    var username = prompt("Subsonic Username: ", "");
    var password = prompt("Subsonic Password: ", "");

    location = "http://" + server;

    var url = "http://" + server + "/rest/getPlaylists?v=1.4.0&c=Subsonic&f=json&u=" + escape(username) + "&p=" + escape(password);
    var xmlHttp = new XMLHttpRequest();
    xmlHttp.open("GET", url, false);
    xmlHttp.send(null);
    var response = xmlHttp.responseText;

    var obj = JSON.parse(response);

    var playlists = obj["subsonic-response"].playlists.playlist;

    for (var i in playlists) {
        var id = playlists[i].id;
        var filename = playlists[i].name;

        url = "http://" + server + "/exportPlaylist.view?id=" + id;

        xmlHttp.open("GET", url, false);
        xmlHttp.send(null);
        var response = xmlHttp.responseText;

        var pom = document.createElement('a');
        pom.setAttribute('href', 'data:text/csv;charset=utf-8,' + encodeURIComponent(response));
        pom.setAttribute('download', filename + '.m3u');
        pom.click();
    }

})()