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Terry Riegel wrote:
>>> I would prefer to not have the id in the form.
> I am also in the habit of not naming my forms.
Heh, you seem to have lotta PITA habits ;-)
> It seems to me this would be common for someone to want to $() a form
> element, but alas I hear no other solutions.
Remember there's one more "dollar function" you could use: "$$()" [1]
Use that (or build yourself a variation) for alleviating your "habits", all
you need is studying some CSS/XPath and - duh - knowing your DOM.
For instance:
$$('form[action="/contact"] input[name="email"]')[0]
would return you the input field named "email" from the form that has the
action set to "/contact".
If you already have the (extended) form object, you could use:
f.down('input[name="email"]')
for the same purpose.
To simplify it, here's a possible variation:
// add your method to "Form.Methods"
Object.extend(Form.Methods, {
getElement: function(form, name) {
form.down( '*[name="' + name + '"]' );
}
});
// apply new method to "Form" elements
Object.extend(Form, Form.Methods);
and now you'll be able to use:
var emailField = f.getElement('email');
IAE, "getElement" is a bad name, as Prototype folks may choose to use it for
something else in the future, choose your own "tricky" name ;-)
OTOH, OFC, you could always use Ken's advice going down the "elements" path
as it should be more efficient for nowadays browsers.
> I am building my parameters to pass to my ajax request like...
> var pars = '?ajaxrequest='+$F('mycomment');
YA bad (YMMV) habit :))
Prototype can help you big time with this kind of things. Please (re)read
Prototype's introductory article to "ajax" [2], especially the "Parameters
and the HTTP method" section. Briefly, Prototype will handle all your
parameters encoding.
>> And it "mostly" works. How would I urlencode $F('mycomment')?
> ahhh just found it its... escape()
Do yourself a favor, NEVER - I mean it - NEVER use (un)escape!
These methods are deprecated [3] and very error prone *because of their
misuse* (just search this list's archive and you'll see what I meant).
Refer to encodeURIComponent & co for such functionality: [4], [5].
[1] http://prototypejs.org/api/utility/dollar-dollar
[2] http://prototypejs.org/learn/introduction-to-ajax
[3]
http://developer.mozilla.org/en/docs/Core_JavaScript_1.5_Reference:Deprecated_Features#Escape_Sequences
[4]
http://developer.mozilla.org/en/docs/Core_JavaScript_1.5_Reference:Global_Functions:encodeURIComponent
[5] http://msdn2.microsoft.com/en-us/library/aeh9cef7.aspx
'HTH
- --
Marius Feraru
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