View file system/AJAX/ajax_count.js

function ajax_count() {
  
  var ac_title = document.querySelector("title");
  
  $.ajax({
    
    url: "/system/AJAX/php/ajax_count.php",
    type: "post",
    dataType: "json",
    success: function(data) {
      
      if (data.title != 'none') {
        
        ac_title.innerText = data.title;
      
      }
      
      if (data.melody != 'none') {
        
        var audio_js = new Audio();
        audio_js.src = '/files/upload/ajax_melody/'+data.melody;
        audio_js.autoplay = true;
      
      }
    
    }
  
  });
  
}