1 if (Meteor.isClient) {
  2   // counter starts at 0
  3   Session.setDefault('counter', 0);
  4
  5   Template.hello.helpers({
  6     counter: function () {
  7       return Session.get('counter');
  8     }
  9   });
 10
 11   Template.hello.events({
 12     'click button': function () {
 13       // increment the counter when button is clicked
 14       Session.set('counter', Session.get('counter') + 1);
 15     }
 16   });
 17 }
 18
 19 if (Meteor.isServer) {
 20   Meteor.startup(function () {
 21     // code to run on server at startup
 22   });
 23 }