IDEA does a pretty decent job, including autocompletion, clickthrough, docs - even supposed to have debugging but only afaik with html files on a server running

IDEA does a pretty decent job, including autocompletion, clickthrough, docs - even supposed to have debugging but only afaik with html files on a server running within the IDE (since that's not how I dev frontend code I can't vouch for the JS debugger - though I can say the remote debugging capabilities on a Java appserver make for nice Ajax debugging)