Radio stream inside the html VS. javascript?

Which way is better and more preferred over the other?

Both are using 2 different methods.

Are there any advantages or disadvantages of using either?

Code 1

https://jsfiddle.net/juw4kbap/225/

  function playAudio(player, button) {
    player.volume = 1.0;
    player.setAttribute("src", "http://hi5.1980s.fm/;");
    player.play();
  }

VS.

Code 2

https://jsfiddle.net/juw4kbap/170/

 function playAudio(player, button) {
    var src = button.getAttribute("data-audio");
    player.volume = 1.0;
    player.setAttribute("src", src);
    player.play();
  }