[Javascript] passing variables - basic question

[Rodney Myers]

Yes, so you would need cookie functions for each page, which could be in
a .js file
But why bother when query string is so simple? Also query strings,
unlike cookies, do not provoke browser alerts if security is so set.

Rodney

"Cheng, Kynan (London)" wrote:
> 
> 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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Rodney Myers
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Technical Director, Shop at ssistant eCommerce Solutions