https://github.com/Pauan/nulan/blob/master/Tree.js
You can just open up Chrome's JavaScript Console and paste in the code (https://raw.github.com/Pauan/nulan/master/Tree.js)
Now try it out like this:
var x = NULAN.toTree({ foo: "bar", qux: "corge" }) console.log("" + x) console.log(x.get("foo")) console.log("" + x.set("nou", "yes")) console.log("" + x)