I started looking at writing some Jscript today.
I have got my head around the new webresource setting and where you have to load the jscript file.
I was then trying to work out the best way to write jscript code and what environment.
The best free solution seems to be Visual Studio. but I also found this excellent post which gives you some intellisense for CRM 2011
What Patrick has done is basically build in intellisense for the Xrm.page new functionality in CRM 2011.
Anything that makes Jscript development easier is ok with me. I have been looking at some other tools which hopefully will add intellisense to the different entities.
I haven’t got it to work yet but when I do I shall post a link for it.