(function() {

    // html collection of tr taken from: https://play.spotify.com/user/vickycarmichael/playlist/6NzPTIj7wEXmp0XDaGHK1t
    var trs = document.getElementsByClassName('tracklist-playlist')[0].children[1].children;
    var musics = [];
    var playlist = [];
    var i, tds, music, artist, album, item, str;

    for (i = 0; i < trs.length; i += 1) {
        tds = trs[i].children;
        music = tds[2].innerText.replace("\n", '');
        artist = tds[3].innerText.replace("\n", '');
        album = tds[4].innerText.replace("\n", '');

        if (music.length > 1 && artist.length > 1 && album.length > 1) {
            str = '' + music + ' - ' + artist + ' - ' + album;
            musics.push({
                artist: artist,
                music: music,
                album: album
            });
            playlist.push(str);
            console.log(str);
        }
    }

    window.musics = musics;
    window.playlist = playlist;

    console.log('Playlist saved in window.musics');
    console.log('Playlist string array saved in window.playlist');

})();