Javascript reference.

var o = {}
o.str = "oh";
o.length
for (var prop in o) { } 
o["nokey"] == undefined 
var t = function(arg) { ... }

JS trick with string.replace(): http://ejohn.org/blog/search-and-dont-replace/

Other references:

• http://blog.kowalczyk.info/articles/jsref.html