[Javascript] Passing data
TomMallard
mallard at serv.net
Thu Apr 5 16:01:24 CDT 2001
This is a backend question...you'll need to read the file and build the
array there as a web service or save a file with it for static data. A
webservice can be wrapped around the array builder function to make the data
available to the client page as a stream. It's worth it for so much data for
web applications to reduce the over-the-wire size, so keep working on this.
Most services are coded as dll's or cgi's and have url's like
http://www.domain.com/some.dll?methodName. Then on your client you set a
javascript variable equal to this address to populate it. Also consider an
xml file be created on the server and then an xmldom.open can create it on
the client to use it in a similar way...
tom
----- Original Message -----
From: "Steve White" <steve at VirtualMechanics.com>
To: <javascript at LaTech.edu>
Sent: Thursday, April 05, 2001 1:33 PM
Subject: RE: [Javascript] Passing data
> Thanks, I will take a look at it.
>
> I understand the security problem which is why I was asking if JS has a
file
> read operation. As it is I am simply looking for a way to pass data in
more
> more compact form than a long ASCII list of array assignments. Instead of
>
> array[0].x = 22;
> array[0].y = 12;
> array[1].x = 10;
> array[1].y = 5;
> array[2].x = 200;
> array[2].y = 120;
> ..... and so on for 1 or 2 meg
>
> or can I find a way to do:
> 22,12 10,5 200,120 ...and so on for 1 or 200k and then parse it after the
> onload event. ( better still as a binary stream)
>
> Thanks
>
> Steve White
> www.VirtualMechanics.com
> www.DHTMLMagic.com
> www.SVGMagic.com
> www.IMSWebTips.com
>
>
> -----Original Message-----
> From: javascript-admin at LaTech.edu [mailto:javascript-admin at LaTech.edu]On
> Behalf Of BEKIM BACAJ
> Sent: Wednesday, April 04, 2001 8:28 PM
> To: javascript at LaTech.edu
> Subject: Re: [Javascript] Passing data
>
>
> THis is what I assked you to be more precize for.
> Because if I understod well, You wan't datda to be read from another
file
> and to be displayed on youre current page. That is my friend a security
> problem that has been very well solved and currently is unbreakable unles
> you use some ASP activity, and even some remote Db that is safe. You can't
> brake the security protocol.
> I have had the same problem and it took me a whole month to find some
way
> to display newr data in the current window withour having to refresh or
> reload the page, correction: moving to another page. The problem was how
to
> read the data (content) of some <DIV> or <LAYER> object into this page
from
> another separate file, and pass it as innerText for instance. There is no
> simple solution, or no solution at all. But there is a simple work-around.
> Pease visit the link above
> http://www.dardaniaonline.com/members/trojani2000/
> You will find a simple Test of dinamicity. And how i solved this problem
> for IE. /it has a little bug but it works after the second click/
> After you view the page go in you're tempIntFolder and find JavaSripts
> asociated you have the names in the bottom of the referencial
> script tags in the page.
> <script language="JavaScript" id=Fili src=""> !
> </script>
> <script src="anima.js"></script>
> <script src="paleta.js"></script>
> <script src="pullat.js"></script>
> <script src="dinamika.js"></script>
> <script src="lokatori.js"></script> !
> And also the text files named Fajlli.txt with prefix 1, 2, 3, if you try
> to find them with Find files and folders plese specify for example
> anima[1].js or for the text file 1Fajlli[1].txt; That are written and
> named like JS strings.
> And if you have any further question, ask!
>
>
>
> ----- Original Message -----
> From: Steve White
> Sent: Wednesday, April 04, 2001 7:31 AM
> To: javascript at LaTech.edu
> Subject: RE: [Javascript] Passing data
>
>
> < The problem to know what is you're aim here What do you wan't to do
> exactly?
> <
>
> Its graphics and animation data to be used with JavaScript functions
> that drive DHTM and SVG (Scalable Vector Graphics). It is probably a lot
> like Flash and we will output to that as well but I assume Flash uses its
> own encoding/decoding format. There is really no limit to how much data
you
> could have so compacting it as much as possible is important. At this
point
> we don't want to get into streaming but I suppose there is no reason why
the
> data could not be sent in packets. At the moment just putting it into a
file
> (could even be in the HTML or SVG file if that makes sense) and then using
a
> standard JavaScript operation to read it. Decoding or parsing should not
be
> a problem for us if we can find and read it.
>
> Thanks
>
> Steve White
> www.VirtualMechanics.com
> www.DHTMLMagic.com
> www.SVGMagic.com
> www.IMSWebTips.com
> -----Original Message-----
> From: javascript-admin at LaTech.edu
> [mailto:javascript-admin at LaTech.edu]On Behalf Of BEKIM BACAJ
> Sent: Tuesday, April 03, 2001 5:58 PM
> To: javascript at LaTech.edu
> Subject: Re: [Javascript] Passing data
>
>
> Hi, Steve!
> The problem to know what is you're aim here
> What do you wan't to do exactly?
> Yes you can put anything in a .txt file. But how do you load it, and
> what type of data do you need.
> JS has a FileSysObject that can read files, and also write to files.
> The split is a command used in strings, why do you need it for?
> Be more specific!
> Regards
>
>
> ----- Original Message -----
> From: Steve White
> Sent: Tuesday, April 03, 2001 11:37 PM
> To: javascript at LaTech.edu
> Subject: RE: [Javascript] Passing data
>
>
> I am not familiar with Split() but I assume that it is some type
of
> string
> parser. If so the problem I am trying to figure out is how do I
pass
> the
> data? If I have a SCRIPT in a HTML file how do I include the code
or
> can I
> just put it in a .txt file and read it. Does js even have a Read
> File
> operation?
>
> I need to get a good reference book.
>
> Thanks
>
> Steve White
> www.VirtualMechanics.com
> www.DHTMLMagic.com
> www.SVGMagic.com
> www.IMSWebTips.com
>
> -----Original Message-----
> From: javascript-admin at LaTech.edu
> [mailto:javascript-admin at LaTech.edu]On
> Behalf Of TomMallard
> Sent: Tuesday, April 03, 2001 2:23 PM
> To: javascript at LaTech.edu
> Subject: Re: [Javascript] Passing data
>
>
> If you used ASCII and kept your key=value pairs it would make
> parsing it out
> on the client pretty simple with split().
>
> Just a thought,
>
> tom
> ----- Original Message -----
> From: "Ian Turner" <ian.turner at romseyassoc.com>
> To: <javascript at LaTech.edu>
> Sent: Tuesday, April 03, 2001 9:26 AM
> Subject: RE: [Javascript] Passing data
>
>
> > Certainly the latter is possible. Though your parsing routine
> might be
> > complex and therefore large in its own right.
> > It could be done as a server side include file or by putting a
> string into
> > the HTML file.
> >
> > All the best
> > Ian
> >
> > -----Original Message-----
> > From: javascript-admin at LaTech.edu
> [mailto:javascript-admin at LaTech.edu]On
> > Behalf Of Steve White
> > Sent: 03 April 2001 16:47
> > To: javascript at LaTech.edu
> > Subject: [Javascript] Passing data
> >
> >
> > We generate large graphic data structures to be processed by our
> included
> js
> > code. I would like to reduce the size of the data as much as
> possible.
> >
> > Instead of passing the data as variable assignments it would be
> better to
> > pass it as binary or if that is not possible at least as a
> sequence of
> ASCII
> > values. So instead of:
> >
> > Mctl[2][0].dis=0;
> > Mctl[2][0].cout=43431132;
> > Mctl[2][0].rgb1=33593818;
> > Mctl[2][0].rgb2=10066329;
> > Mctl[2][0].lwid=0;
> > Mctl[2][1] = new Array();
> > Mctl[2][1].sclx=1.00;
> > Mctl[2][1].scly=1.00;
> > Mctl[2][1].rot=-91.00;
> > Mctl[2][1].tim=363;
> > Mctl[2][1].dis=238;
> > Mctl[2][1].cout=43431132;
> >
> > I could do something like:
> >
> > 0,
43431132,33593818,10066329,0,1.00,1.00,91.00,363,238,43431132;
> >
> > Can JavaScript be used to read an attached binary or ASCII file?
> Or could
> it
> > be included within the SVG/HTML document as a huge string and
then
> parsed
> > following the onload event?
> >
> > Thanks
> >
> > Steve White
> > www.VirtualMechanics.com
> > www.DHTMLMagic.com
> > www.SVGMagic.com
> > www.IMSWebTips.com
> >
> >
> > _______________________________________________
> > Javascript mailing list
> > Javascript at LaTech.edu
> > http://www.LaTech.edu/mailman/listinfo/javascript
> >
> >
> > _______________________________________________
> > Javascript mailing list
> > Javascript at LaTech.edu
> > http://www.LaTech.edu/mailman/listinfo/javascript
> >
>
>
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