1<!DOCTYPE html> 2<html> 3 <body> 4 <script> 5 function addAudio(id, file) { 6 var audio = document.createElement('audio'); 7 audio.src = file; 8 audio.loop = true; 9 audio.id = id; 10 document.body.appendChild(audio); 11 } 12 13 function getIDFromURL() { 14 var query = window.location.search; 15 return query.substring(query.lastIndexOf("id=") + 3); 16 } 17 18 addAudio('background_audio', 'pink_noise_20s.wav'); 19 // Main audio file is identified by an ID passed in the page-set. 20 addAudio(getIDFromURL(), 'pink_noise_140ms.wav'); 21 </script> 22 </body> 23</html>