[morty16]

There's a recent release by O'Reilly called "Choosing a Javascript Framework" (http://shop.oreilly.com/product/9781939902085.do) that you might want to look at.

It covers the same frameworks (Angular, Backbone, Ember) and also mentions Polymer and React.

~20$ for the early access version.

[clairity]

nice! seems a bit pricey for a rough draft ebook though. but i do like that it includes polymer and react, which i know little about.

what i find interesting with these frameworks is that they're all moving the templating engine (something like coldfusion from 15 years ago, ha!) to the frontend... part of the ebb and flow of server vs client side computing i guess.