polling.js

App.prototype = {
  poll: function(endpoint){
    $.ajax({ url: endpoint, success: function(data){
        console.log(data);
    }, dataType: "json", complete: _.bind(function() {
         setTimeout(_.bind(function() {
             this.poll(endpoint)
         }, this), this.pollingFrequency);
    }, this), timeout: 3000 });
  }
}