Re: HTML Forms question...
| From: | Ignatius Reilly | Date: | Tue, 19 Nov 2002 19:12:43 +0000 |
| Subject: | Re: HTML Forms question... | ||
| References: | 1 | Groups: | php.db |
| Request: | Send a blank email to php-db+get-23492@lists.php.net to get a copy of this message | ||
Great piece of advice Mike. Thanks. Far from obvious. I was stuck with this
problem since a few days.
Will that also apply to n-dimensional array, like:
document.form["system[]"][0][1] ?
Ignatius
____________________________________________
----- Original Message -----
From: "Ford, Mike [LSS]" <M.Ford@lmu.ac.uk>
To: "'Rich Gray'" <rich@f1central.net>; "NIPP, SCOTT V (SBCSI)"
<sn4265@sbc.com>; <php-db@lists.php.net>
Sent: Tuesday, November 19, 2002 7:35 PM
Subject: RE: [PHP-DB] 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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