javascript - Knockout.js vs Backbone.js (vs ?) - Stack Overflow

I'm a long-time developer who's getting more and more into in-browser development. (The modern tools are awesome!) I need to build some bigger, longer-running client-side interactions to go with my server-side stuff. Is it worth adopting a framework like Knockout or Backbone to speed things along and keep things organized? If so, how should I go about choosing between the two? And are there other

[muto_masa]

knokout.jsなんてのもあるんだね。