Question on Variables, Arrays, and Multiple Instances

[seven]

This might be a newbie question or otherwise easy stuff for some of
you, but it's tweaking me ... can't seem to get it to work right.

I am working with a script that basically creates two arrays, and with
a single call in the html, randomly inserts a graphic (which is linked
to another page, as defined in the second array). The working example
is
http://seven.postmodern.com/insight/...rdreading.html

What I would like to do is call multiple instances of random images,
but the way I have it currently set up, I get the same random image if
I try to call it more than once - so I've tried defining additional
variables but perhaps I am doing it incorrectly. Can anyone help or
offer a tip/tutorial on this if possible? I can workaround by using a
frameset but that gets ugly if doing too many cards. help?

var imagenumber = 44 ;
var randomnumber = Math.random() ;
var rand1 = Math.round( (imagenumber-1) * randomnumber) + 1 ;
images = new Array
images[1] = "image1.gif "
images[2] = "image2.gif "
....
images[44] = "image22r.g if"
var image = images[rand1]

links = new Array
links[1] = "image1.htm "
links[2] = "image2.htm "
....
links[44] = "image22r.h tm"
var link = links[rand1]

/then it within the page, calls the graphic as such
<script language="JavaS cript">
<!-- Hide this script from old browsers -->

document.write( '<A HREF="' + link + '"target="_blan k"><IMG SRC="' +
image + '" border="0"></a>')
<!-- End Hiding Here -->
</script>
---
http://seven.postmodern.com
seven at post modern dot com
If sending an email, +add+ the word "newsgroup" to the subject line to temporarily work around my spam block utility.

[Lee]

seven said:

<script language="JavaS cript">
<!-- Hide this script from old browsers -->

document.write ('<A HREF="' + link + '"target="_blan k"><IMG SRC="' +
image + '" border="0"></a>')
<!-- End Hiding Here -->
</script>

I love the superstitious "hiding from old browsers", done
in a way that wouldn't hide anything from any browser.

Thanks

[Jim Ley]

On 16 Jan 2004 23:12:56 -0800, Lee <RE************ **@cox.net> wrote:

seven said:

<script language="JavaS cript">
<!-- Hide this script from old browsers -->

document.writ e('<A HREF="' + link + '"target="_blan k"><IMG SRC="' +
image + '" border="0"></a>')
<!-- End Hiding Here -->
</script>

I love the superstitious "hiding from old browsers", done
in a way that wouldn't hide anything from any browser.

but at least it would work in an XHTML browser!

Jim.
--
comp.lang.javas cript FAQ - http://jibbering.com/faq/

[seven]

On 16 Jan 2004 23:12:56 -0800, Lee <RE************ **@cox.net> wrote:

I love the superstitious "hiding from old browsers", done
in a way that wouldn't hide anything from any browser.

I know, holdovers that don't do anything....

Any ideas on the variable control?
---
http://seven.postmodern.com
seven at post modern dot com
If sending an email, +add+ the word
"newsgroup" to the subject line to
temporarily avert the spam filter.

[Dr John Stockton]

JRS: In article <oo************ *************** *****@4ax.com>, seen in
news:comp.lang. javascript, seven <no****@checkth esigline.com> posted at
Sat, 17 Jan 2004 06:47:36 :-

What I would like to do is call multiple instances of random images,
but the way I have it currently set up, I get the same random image if
I try to call it more than once - so I've tried defining additional
variables but perhaps I am doing it incorrectly. Can anyone help or
offer a tip/tutorial on this if possible? I can workaround by using a
frameset but that gets ugly if doing too many cards. help?
Read the c.l.j FAQ.

If your images repeat, it is probably because the names repeat. Cut out
image-fetching and show the names.

If your names repeat, it is probably because the indexes repeat. Cut
out name look-up and show the indexes.

Always simplify a problem until it becomes obvious where the trouble is.
var imagenumber = 44 ;
var randomnumber = Math.random() ;
var rand1 = Math.round( (imagenumber-1) * randomnumber) + 1 ;
Generates unevenly distributed numbers; see c.l.j FAQ.
images = new Array
Your images is the name of an existing part of the document; use a
different identifier such as imgs
images[1] = "image1.gif "
images[2] = "image2.gif "
...
images[44] = "image22r.g if"
It is silly to test with 44 elements when failures occur. Test with,
say, 4.

---

DSS.

--
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