// Get a reference to an element.
var square = document.querySelector('.square');
// Create an instance of Hammer with the reference.
var hammer = new Hammer(square);
// Subscribe to a quick start event: press, tap, or doubletap.
// For a full list of quick start events, read the documentation.
hammer.on('press', function(e) {
  e.target.classList.toggle('expand');
  console.log("You're pressing me!");
  console.log(e);
});

// Get a reference to an element.
var square = document.querySelector('.square');
// Create a manager to manage the element.
var manager = new Hammer.Manager(square);
// Create a recognizer.
var TripleTap = new Hammer.Tap({
  event: 'tripletap',
  taps: 3
});
// Add the recognizer to the manager.
manager.add(TripleTap);
// Subscribe to the event.
manager.on('tripletap', function(e) {
  e.target.classList.toggle('expand');
  console.log("You're triple tapping me!");
  console.log(e);
});