Lessening our memory footprint

gistfile1.js

//So we can totally use prototypes with knockout! Here's how...
var FloorElement = function () {
  this.normalObservable = ko.observable("no optimization here");
  this.computedObservable = ko.computed(this.functionOnPrototype);
}

FloorElement.prototype.functionOnPrototype = function () {
  /* this is very obvious in retrospect.  Also lets us manually call some of these things, 
  which can be worthwhile. */
}

You're memory wizard skillz are much better than mine. I'm guessing closures are higher footprint since the proto just looks up the chain?

if we do it the current way

var FloorElement = function () {
  this.normalObservable = ko.observable("no optimization here");
  this.computedObservable = ko.computed(function () {/*...*/});
}

and make 100 floor elements, the anonymous function in the KO computed is actually created 100 times, as opposed to just pointing to a single function