Single Tap Articulate Storyline

var startTime;
var endTime;
var player = GetPlayer();
player.SetVar("singleTap",false);
document.addEventListener('touchstart', function(event) {
  startTime = new Date().getTime();
}, false);

document.addEventListener('touchend', function(event) {
  endTime = new Date().getTime();
  if ((endTime - startTime) < 500) {

    // single tap detected
    // do something here

        player.SetVar("singleTap",true);
        player.SetVar("singleTap",false);
  }
}, false);