examples/elevator/index.js
function (event) {
      if (event.name === 'goToLevel'
        && event.level !== self.level) {
        self.pushLevel(event.level);
      }
    }
function (event) {
      if (event.name === 'goToLevel'
        && event.level !== self.level) {
        self.pushLevel(event.level);
      }
    }
As the elevator's doors are currently opened
we push any user request to go to
a level on the level stack.