Check out this series (unit on JS):
http://www.w3schools.com/js/default.asp
I've played around with some of their other tutorials, and was fairly
impressed, though I'd like to go a bit deeper. Nice thing about the
tutorials is they are hands on and live. Type in a CSS or HTML (or JS)
expression, and it's evaluated right there.
Let me know what you think.
--Don Ellis
On Thu, Mar 26, 2009 at 1:54 PM, Robert Citek <[email protected]>wrote:
>
> Can anyone recommend a good tutorial for using JavaScript at the command
> line?
>
> Most JavaScript (JS) tutorials are written for using JS within a
> browser. But JS can also be used from the command line if you install
> the stand-alone JS interpreter Spidermonkey:
>
> $ sudo apt-get install spidermonkey-bin
>
> The canonical simple example:
>
> $ js -e 'print("Hello, world") ;'
> Hello, world
>
> And a simple line numbering loop:
>
> $ yes "Hello, world" | head | js -e 'var count=0 ; while
> (line=readline()) { count++ ; print(count, ": ", line) ; } '
> 1 : Hello, world
> 2 : Hello, world
> 3 : Hello, world
> 4 : Hello, world
> 5 : Hello, world
> 6 : Hello, world
> 7 : Hello, world
> 8 : Hello, world
> 9 : Hello, world
> 10 : Hello, world
>
> Unfortunately, it took me a bit of digging and guessing to find out
> how to do even those simple examples. For example, the readline()
> function isn't even mentioned in the "Javascript: the Definitive
> Guide" book. I stumbled upon that by looking at this Mozilla page:
>
> https://developer.mozilla.org/en/Introduction_to_the_JavaScript_shell
>
> What I'm looking for is more in line with this tutorial on awk, a
> series of one- or two-liners that get across the basic functionality
> of the language:
>
> http://www.vectorsite.net/tsawk_1.html#m2
>
> I'm still Googling, but can anyone recommend a good JS or Spidermonkey
> tutorial?
>
> Regards,
> - Robert
>
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