Doctuh wrote:
> ...
>
> <form id="foo">
> <input type="hidden" name="id' value="bar" />
> </form>
>
> If you have a form with a hidden form element named 'id', and you try
> to use readAttribute() on the form you will get two different
> responses:
>
> IE gives you an Object (the input object named 'id')
> Firefox gives you 'foo'.
>
> IE will give you 'foo' if there is not a overriding form element.
>
> ...
>
>
I can confirm that using element.id, element.readAttribute('id'), and
element.getAttribute('id') will always return the same thing as the most
explicit form-element access: document.forms[0].elements['id']; In
fact, "foo" doesn't seem to be a value for any attribute of the form
node--when I iterate through the properties of the foo form, for
example, the text "foo" does not show up anywhere. I don't know of any
function besides getAttribute that should return it. Somehow the 'id'
node (the hidden input) in the form's elements collection overwrites the
form node id.
I don't know if there is a good way to normalize this behavior for IE
without checking for a form tag and using something hackish like a regex
on outerHTML. For example, the code below uses outerHTML and works at
least for the case you provided.
- Ken Snyder
Element.addMethods('form', {
readAttribute: function(element, name) {
element = $(element);
if (Prototype.Browser.IE) {
// begin new section
if (typeof element[name] == 'object') {
var match = new RegExp(RegExp.escape(name) + '=([^
>]+)').exec(element.outerHTML);
if (match) return match[1];
}
// end new section
var t = Element._attributeTranslations.read;
if (t.values[name]) return t.values[name](element, name);
if (t.names[name]) name = t.names[name];
if (name.include(':')) {
return (!element.attributes || !element.attributes[name]) ? null :
element.attributes[name].value;
}
}
return element.getAttribute(name);
}
});
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