[Javascript] passing variables - basic question

[Cheng, Kynan (London)]

awesome,
Thanks Rodney!

So the alternative would be to write a cookie from the first file and have
the second file read and parse that right?

Thanks
Kynan

> -----Original Message-----
> From:	Rodney Myers [SMTP:rmyers at i-way.co.uk]
> Sent:	11 April 2001 10:23
> To:	javascript at LaTech.edu
> Subject:	Re: [Javascript] passing variables - basic question
> 
> Kynan,
> 
> Using the query string is a perfectly good way to do it. The alternative
> would be cookies.
> 
> Thing to understand about using query strings with javascript is that
> there is no server-side-type mechanism for picking up values of
> name=value pairs. I believe in PHP it would be $selectedpicture ?
> 
> In js all you are doing is parsing the query string. So 
> href="picture.html?pictureone.jpg"
> could be used, just as well as 
> href="picture.html?selectedpicture=pictureone.jpg"
> if that was all you were using the query string for in these pages.
> 
> window.location.query gets you the string beginning with the "?" char. 
> Except js may not believe it is really a string hence the ""+ in the
> line below which forces to string type.
> 
>  
> var qs = ""+window.location.query;
> qs=qs.substring(1);
> 
> Now qs has the value of "selectedpicture=pictureone.jpg" or
> "pictureone.jpg"
> The second alternative would be less work to deal with, I think.
> 
> hth
> 
> Rodney
> 
> "Cheng, Kynan (London)" wrote:
> > 
> > Hi guys,
> > 
> > I have not coded in Javascript before and I am trying to find out how to
> > pass variables from page to page, so I was wondering if someone could
> look
> > this over briefly:
> > 
> > For example, if I have a page with thumbnail, and I'd like to call a
> page
> > that dynamically places the original photo into it (based on the
> thumbnail
> > clicked) does it go a little something like this?
> > 
> >  in index.html:
> > <a href="picture.html?selectedpicture=pictureone.jpg"><img
> > src="thumbnailone.gif"></a>
> > 
> >  in picture.html
> > (PHP version) <a href="index.html"><img src="<?php print $selected
> picture
> > ?>"></a>
> > (JS version) which doesn't work
> > <script>
> > document.write("<a href='index.html'><img src=", selectedpicture ,
> "></a>")
> > </script>
> > 
> > Do i need to have some script which takes in the URL argument?
> > Is there another (better) way to pass variables?
> 
> 
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