RE: HTML Forms question...

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Not only does Mike's description below work really well for a single page,
if you write all of your JS stuff like this, you can very easily use the
same script on multiple pages. Portability! Works great for me.

> -----Original Message-----
> From: Ford, Mike [LSS] [mailto:M.Ford@lmu.ac.uk]
> Sent: Tuesday, November 19, 2002 1:35 PM
> To: 'Rich Gray'; NIPP, SCOTT V (SBCSI); php-db@lists.php.net
> Subject: RE:  HTML Forms question...
> 
> 
> > -----Original Message-----
> > From: Rich Gray [mailto:rich@f1central.net]
> > Sent: 20 November 2002 01:13
> > 
> > If you name the checkbox as name="system[]" then PHP will 
> > automatically
> > create an array of the checkbox values which can be 
> > subsequently accessed
> > via $_POST['system'][n] - be warned however that the '[]' can 
> > screw up any
> > JavaScript code that refers to the checkbox object...
> 
> G'rrrr -- not this old chestnut again!
> 
> It only "screws up" your JavaScript if you don't write your 
> JavaScript to
> allow for it.
> 
> It's really very simple: *by* *definition* in JavaScript, the notation
> 
>     a.b
> 
> is *identical* to
> 
>     a["b"]
> 
> Thus, if you have a single checkbox named with name="system", 
> then you can
> access it in either of these ways:
> 
>     document.form.system
>     document.form["system"]
> 
> By extension, if you have multiple checkboxes all named with
> name="system[]", you can refer to them as:
> 
>     document.form["system[]"][0]
>     document.form["system[]"][1]
>     document.form["system[]"][2]
> 
> etc...
> 
> I know this works because I've been using it for years (even before I
> started programming with PHP!).
> 
> Cheers!
> 
> Mike
> 
> ---------------------------------------------------------------------
> Mike Ford,  Electronic Information Services Adviser,
> Learning Support Services, Learning & Information Services,
> JG125, James Graham Building, Leeds Metropolitan University,
> Beckett Park, LEEDS,  LS6 3QS,  United Kingdom
> Email: m.ford@lmu.ac.uk
> Tel: +44 113 283 2600 extn 4730      Fax:  +44 113 283 3211 
> 
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