makeZoneSpec

Parameters

1. data {data}:

   The Zone's data object, useful when you want to append data to the Zone.

   This examples wraps document.createElement to keep count of how many elements are created, and appends the count to data when the Zone ends.

   var mySpec = function(data){
       var realCreateElement,
           count = 0;
   
       return {
           beforeTask: function(){
               realCreateElement = document.createElement;
               document.createElement = function(){
                   count++;
                   return realCreateElement.apply(this, arguments);
               };
           },
           afterTask: function(){
               document.createElement = realCreateElement;
           },
           ended: function(){
               data.elementsCreated = count;
           }
       };
   };
   
   var zone = new Zone(mySpec);
   
   zone.run(function(){
       // Do stuff here
   })
   .then(function(data){
       data.elementsCreated; // -> 5
   });