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Help With Syntax..Please

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abraxas

abraxas

Programmer
Jan 15, 2001
75
AU
This is the LAST stretch of the &quot;Browser Cache Busting&quot; exercise which has been given to me in the last week. Meta Tags, Twin <BODY> statements and other suggestions, all with good intentions, have not worked.

This is the fragment that will work no matter how a clients browser cache is configured. (Thanks dang65)
frag1.
<TD>
<SCRIPT LANGUAGE=&quot;JavaScript&quot;>
document.write('<A HREF=&quot;/cgi-bin/myscript.pl?Dummy=' + (new Date()).getTime() + '&quot;>Link Text Here</A>')
</SCRIPT>
</TD>

After five hours of trying to fit this sideways into a RollOver image statement (frag2) and trying to understand what ' & &quot; mean to a browser I realised I was not making much progress.

frag2.
<a href=&quot;/cgi-jeanwarehouse/viewcart.pl&quot; onMouseOut=&quot;MM_swapImgRestore()&quot; onMouseOver=&quot;MM_swapImage('Image20','','toolbar/tb1d.jpg',1)&quot;>
<img name=&quot;Image20&quot; src=&quot;toolbar/tb1u.jpg&quot;></a>

Yes, those are DW3 js function calls.
Could anyone please offer a suggestion on how to combine frag1 with frag2 OR maybe some web resource that adequately explains (to the javascript lay person) what ' & &quot; actually do or don't?

Many thanks to you all
abraxas
 
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Single ( ' ) and double ( &quot; ) quotes in JavaScript function identically and have to be balanced. You need more levels of quotes. JavaScript let's you do this by &quot;escaping&quot; quotes inside quotes by inserting a backslash ( \ ) character before it. For instance:

var foo = &quot;This is some \&quot;quoted text\&quot; to demo escaping.&quot;;

This is totally legal JavaScript. Basically what this gives you is the use of two more inner levels of quotes.

For you this would mean doing something like this:

document.write('<A HREF=&quot;/cgi-bin/myscript.pl?Dummy=' +
(new Date()).getTime() +
' onMouseOver=&quot;swapImage(\'img2\',\'\',\'img2.jpg\');&quot;' +
'&quot;>Link Text Here</A>')

Pretty freakin' ugly, huh?

The other option would be to throw all (or some anyway) of those string literals into variables and concatenated them inline.

Hope this helps.
/johnny
 
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Johnny,
Remember ASCII's interperation of line noise? Harkens to days long past.

Thank you for your the advice, I'll start &quot;translating&quot; right away and let you know.
Kind regards
abraxas
 
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