a delayed event listener

delayedEventListener.js

// Call eventlistener callback after a short delay
delayedEventListener(node, event, callback, useCapture) {
  node.addEventListener(event, function handler(evt) {
    node.removeEventListener(event, handler, useCapture); // remove the listener, not necessary
    timer.setTimeout(function() {
      try {
        callback.call(self, evt); // call the main callback
      }
      catch(err) { }
    }, someTime); // any amount of time to delay
  }, useCapture);
}