JSFiddle - React, Tailwind, and code Playground

by Vitaliy

HTML

<pre><div id="playlist">
  [spoiler=2016 - Atomic]  
01. Ether (5:10)
02. SCRAM (5:41)
03. Bitterness Centrifuge (4:51)
04. U-235 (4:34)
05. Pripyat (4:19)
06. Weak Force (5:08)
07. Little Boy (3:52)
08. Are You a Dancer (3:53)
09. Tzar (15:13)
10. Fat Man (5:59)
[/spoiler]
</div></pre>

JavaScript

var reg = /([0-9]*:[0-9]*)/g;
var text = document.getElementById("playlist").innerHTML;
function replace(str, match){
	var rez = match.split(":");
  if(rez[0].length == 1){
  	rez[0] = "0" + rez[0];
  }
  return rez.join(":");
}
var formated = text.replace(reg, replace);
document.getElementById("playlist").innerHTML = formated;