I haven't found a use for a lot of these features, a lot of them just seem very ad-hoc additions to the language. A class based object oriented model would have

I haven't found a use for a lot of these features, a lot of them just seem very ad-hoc additions to the language. A class based object oriented model would have solved a lot of issues relating to the myriad ways to implement object orientation in javascript. The schizophrenic like approach we have right now isn't being helped by incremental changes driven by the lowest common denominator of what can be implemented in a web browser development cycle. Knowing the [Good Parts](http://www.amazon.com/JavaScript-Good-Parts-Douglas-Crockford/dp/0596517742 http://www.amazon.com/JavaScript-Good-Parts-Douglas-Crockfor...) helps but you just can't keep adding parts that you think may be good.