>>There were few major players that were even backed by companies: Dojo, Prototype, GWT, (and like 4 more that I can't remember). Vaadin comes to mind :) +1 o

>>There were few major players that were even backed by companies: Dojo, Prototype, GWT, (and like 4 more that I can't remember). Vaadin comes to mind :) +1 on Elm, also don't think the learning curve for someone with any "functional" (even if JS) exposure is that steep.