Generate Unique Object IDs

object_id.js

/*
  Generate unique IDs for Objects
*/
(
  function(ref){
    ref.__counting_tick_var = 0;
    Object.prototype.id = function(){
      return (
          this.__counting_tick_var ?
          this.__counting_tick_var :
          (this.__counting_tick_var = ++__counting_tick_var)
        )
    }
  }
)((typeof(global) == "undefined"? window: global))

/*
  How to?
*/

var a = {};
console.log(a.id())

Works both on nodejs as well as browsers.

It's unique when you are not storing it for future use.