Re: [OT] JavaScript with socket function

[jekillen <jekillen@prodigy.net>]

On Dec 20, 2007, at 5:49 PM, Nelson Castillo wrote:

> On Dec 20, 2007 1:06 PM, Misko <asdrtg-mlist@yahoo.com.au> wrote:
> > I am trying to write some JavaScript function in web page
> > that can fetch other web page from internet, store it in
> > variable, parse and present some extracted data from that
> > other page. I just do not know how to fetch other page.
> > I guess I am looking for some kind of socket
> > function in JavaScript (like fsockopen() in PHP).
> > Is there such thing?
>
> Search for XMLHttpRequest.
>
> http://en.wikipedia.org/wiki/XMLHttpRequest
> You might want to use it to retrieve HTTP(S) documents (can be XML).
>
> I think you cannot open pages that are not hosted in the same host
> the original page (the one with the JS code) is. (I am not sure now).
>
> Regards,
> Nelson.'
You cannot use javascript to write files (assuming you want to save 
them, or the results of
parsing the files). This is a security measure that every commercial 
browser uses. It prevents
arbitrary scripts from reading, writing or modifying files on the 
client machine.You will have to
use a server side technology like php, perl, or ruby. This can either 
be done as command line
scripts or under the auspices of a web server. It sounds like you are 
looking at Curl 'c'+ url.
JK