watch.js

Extends the JavaScript Object prototype to observe when an object is changed.

Usage is as follows:

var obj = {};

obj.watch(function(){
  // will be called when the object is modified
});

obj.unwatch(); // will stop watching for changes

In addition, two helper methods are added to the Object prototype: clone and isIdenticalTo.

Usage of these is as follows:

var obj1 = { alpha: "alpha", beta: "beta" };
var obj2 = obj1.clone(); // creates a clone of obj1

console.log( obj1 == obj2 ); // false because they are not the same object

console.log( obj1.isIdenticalTo(obj2) ); // true because they are identical

Have fun!