code: function installEventListener(selector, type, listener)
  {
    // Creates the element empty
    var element;
  
    // Selects, gets & stores the first DOM object matching to the selector
    element = document.querySelector(selector);
  
    // Installs an Event Listener on this DOM object
    element.addEventListener(type, listener);
  }
docs: *******************************\
  Installs an Event Listener
  @param {String}          selector  => the CSS selector
  @param {String}          type      => the event type
  @param {Object|Function} listener  => the event listener