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Home: Other Programming Languages: Javascript:
Random cell background image

 


Melvosh
User

Sep 24, 2002, 4:38 AM

Post #1 of 4 (17917 views)
Random cell background image Can't Post
I'm trying to randomly select a background image for a table cell. I've got the array set up, and I can select a random element out of it. My question is, what's the best way to write the css to include the randomly selected image? Can you do a js document.write within <style> tags? Should I just document.write the entire table cell line, and write out the style within the table cell? Any advice would be greatly appreciated. Thanks.

P.S. I already had this working in perl, but since most of my pages on my site aren't perl, I need to be able to do it in js. Unless someone can convince our IT group to enable XSSI.
"...there's some good in this world, Mr. Frodo, and it's worth fighting for." - Samwise Gamgee, The Two Towers


fashimpaur
User

Sep 26, 2002, 8:58 AM

Post #2 of 4 (17913 views)
Re: [Melvosh] Random cell background image [In reply to] Can't Post
Melvosh,

A document.write between style tags is probably not the best way to do this.

I will write a quick example script to show you a better way and you can make
whatever decisions you want as to the direction you want to go.

Will post again soon,
Dennis

$a="c323745335d3221214b364d545".
"a362532582521254c3640504c3729".
"2f493759214b3635554c3040606a0",
print unpack"u*",pack "h*",$a,"\n\n";


fashimpaur
User

Sep 26, 2002, 1:06 PM

Post #3 of 4 (17911 views)
Re: [Melvosh] Random cell background image [In reply to] Can't Post
Melvosh,

I am not having as easy of a time as I thought. I will have to get back to you again on this.
Dennis

$a="c323745335d3221214b364d545".
"a362532582521254c3640504c3729".
"2f493759214b3635554c3040606a0",
print unpack"u*",pack "h*",$a,"\n\n";


Melvosh
User

Sep 27, 2002, 9:05 AM

Post #4 of 4 (17907 views)
Re: [fashimpaur] Random cell background image [In reply to] Can't Post
fash,

It's probably not the most elegant solution, but it works for my purposes. It totally screws up in Netscape 4.7, but it did that before, since Netscape likes to tile td background images. And usage of Netscape around here is declining, and is almost nil in our department. (This is not intended to start a flame war on browsers, it's just my opinion.) Anyway, here's the code:

Code
 <script type="text/javascript"> 
<!-- 
var bg_Array = ["cracked_varnish", "glass", "grad1", "palette_knife", "radial_sweep", "ripple", "spatter", "sponge", "sprayed_strokes", "vortex"]; function rand(max) { 
  return Math.round(Math.random() * max); 
}  
 
document.write("<style type='text/css'> td.bgp { background-image: url('/cemqa/images/460x65_" + bg_Array[rand(bg_Array.length)] + ".jpg'); background-repeat: no-repeat; background-position: center center;} </style>"); 
// --> 
</script>
If you can come up with something better, or have a suggestion on getting Netscape not to tile the td bg image, I'd love to hear it. Thanks.

"...there's some good in this world, Mr. Frodo, and it's worth fighting for." - Samwise Gamgee, The Two Towers

 
 


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