How does the following javascript work? After the first script runs the
variables "sGeobytesCity" , "sGeobytesRegio n" and "sGeobytesCount ry"
contain values that have been set somehow by the
"src=http://gd.geobytes.com ..."
how does it do that? It appears to pass the string
"variables=Geob ytesCountry, ..." and on return the document variable
"sGeobytesCount ry" contains a value!!
thanks,
-Steve
------------------------------------------------
<html>
<body>
<script language="Javas cript"
src="http://gd.geobytes.com/Gd?after=-1&variables=Geo bytesCountry,Ge obytesCity,Geob ytesRegion">
</script>
<script language="javas cript">
if(typeof(sGeob ytesCountry) != "undefined" &&
typeof(sGeobyte sRegion) != "undefined" &&
typeof(sGeobyte sCity) != "undefined" )
{
var url = 'CookieDemo.asp x?IPCity=' +
sGeobytesCity + '&IPRegion=' + sGeobytesRegion +
'&IPCountry=' + sGeobytesCountr y ;
document.write( "<META HTTP-EQUIV='Refresh' CONTENT='0; URL="+url+"'>") ;
}
else
{
document.write( "<META HTTP-EQUIV='Refresh' CONTENT='0;
URL=CookieDemo. aspx'>" ) ;
}
</script>
</body>
</html>
3  1845 
On 27/05/2005 23:49, Steve Richter wrote: How does the following javascript work? After the first script runs the
variables "sGeobytesCity" , "sGeobytesRegio n" and "sGeobytesCount ry"
contain values that have been set somehow by the
"src=http://gd.geobytes.com ..."
This has nothing to do with Javascript. The Gd resource will be a
server-side script written in PHP, ASP, or whatever, that outputs a
series of var statements. Which variables are written is determined by
the names listed in the query string. Nothing special - just like a
dynamically generated HTML document, only a script instead.
[snip]
Mike
--
Michael Winter
Replace ".invalid" with ".uk" to reply by e-mail.
Michael Winter wrote: On 27/05/2005 23:49, Steve Richter wrote:
How does the following javascript work? After the first script runs the
variables "sGeobytesCity" , "sGeobytesRegio n" and "sGeobytesCount ry"
contain values that have been set somehow by the
"src=http://gd.geobytes.com ..."
This has nothing to do with Javascript. The Gd resource will be a
server-side script written in PHP, ASP, or whatever, that outputs a
series of var statements. Which variables are written is determined by
the names listed in the query string. Nothing special - just like a
dynamically generated HTML document, only a script instead.
Wow! When do I finally know everything there is to know about web
programming?
thanks for the explanation, Mike. The Src= causes javascript to be
returned from the URL, and that script contains a series of "var =
xxx;" statements. Those vars are then available to other scripts in
the document.
Who invented all this stuff??
-Steve
Steve Richter wrote: Wow! When do I finally know everything there is to know about web
programming?
Perhaps never.
[...]
Who invented all this stuff??
Tim Berners-Lee started the Web by inventing HTML.
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