Does JavaScript have limits?

Well - it certainly has limits right now in terms of processing power.

It's scripted, it's running through an interpreter. You could write a compiler for javascript that compiles to a PIC microcontroller assembly if you wanted to.

Anything that gets executed is machine code - the only arbiter of speed is how many steps of abstraction it has to go through to get there and how efficient each of the levels of compilation is because that's what determines how generic (ie. bloated) the machine code is.

Obviously it does, it's just further than it was. Just the other day I loaded a few million points into a WebGL canvas. I was trying to see if I could load a full MRI scan. It work aside from being really slow (my box was dying ;p) I could see my head in 3D ;p I then tried to load a high resolution rat brain and my application couldn't handle it. Also, chrome has a really low memory limit on scripts, trying to figure out how to not hit it.

Yes, Safari Version 5.0.2 in my case.

Works in Firefox, though.

Yes, all programming languages have limits. Next question.