how to use music auto play in background website code example

Example: javascript play many background music

jQuery(document).ready(function (){
var audioArray = document.getElementsByClassName('songs');
var i = 0;
audioArray[i].play();
for (i = 0; i < audioArray.length - 1; ++i) {
    audioArray[i].addEventListener('ended', function(e){
        var currentSong = e.target;
        var next = $(currentSong).nextAll('audio');
        if (next.length) $(next[0]).trigger('play');
    });
}
});