Just a few basic newbie questions...
The books i'm working out of seem to all be using version 1.2 or 1.3, but in looking for reference stuff online, everything seems to be 1.5 oriented, though there's a lot of stuff on versions up to 1.9.
Tried to decipher what I needed from Wikipedia, the ECMA standard, and the Mozilla developer pages, but to no avail.
I'm sure learning the older version gives me a solid foundation, but is there someplace I can find some kind of comparison charts?
Also, what is the newest acceptable version that has the most cross-browser compatibility?
Any input here would be greatly appreciated! Thanks!