context.md

Ways to pass/keep context:

1. Anonymous callback, e.g.

   var context = {
     callback: function(){
       // ...
     }
   };
   
   asyncThing(function(){
     // if it's a property,
     context.callback();
     // if not,
     callback.apply(context);
   });

2. Pass the context and the function as parameters, e.g.

   asyncThing(callback, context);

3. Using bind(), e.g.

   // homegrown
   var boundCallback = bind(callback, context);
   // or built-in (to newer browsers)
   var boundCallback = callback.bind(context);
   
   asyncThing(boundCallback);