Event.element returns an element. Alert-ing it performs an implicit
toString().
There are two versions of match()--the one it seems you're trying to
use is a String method, which takes a regex as an argument. The other
you correctly identified as a Prototype extension of Element. [1].
Using this version of match() accepts a CSS selector as a string, and
returns a boolean.
Event.element(evt).match('form#someFormId input.someClass'); //
returns boolean..
You could also do (less recommended)
Event.element(evt).innerHTML.match(regex);
Event.element(evt).inspect().match(regex); // [2]
What you don't say explicitly, but what I infer, is that you're
trying to get the value of some form element.
var val = Event.element(evt).value;
var val = $F(Event.element(evt)); // [3]
TAG
1. http://prototypejs.org/api/element/match
2. http://prototypejs.org/api/element/inspect
3. http://prototypejs.org/api/utility/dollar-f
3b. http://prototypejs.org/api/form/element/getValue
On Aug 2, 2007, at 3:22 PM, Gilant wrote:
>
> A have an observer watch for a click on a link. Inside the triggered
> function, I want to extract a piece of information from the URL.
> Currently I am able to do:
> alert(Event.element(el));
>
> This displays the url string of the link, which is exactly what I need
> to work with. However, when I try:
> Event.element(el).match(//);
>
> I get a javascript error "selector.match is not a function". I also
> note that prototype has an extension to Element named match as well.
> Am I accidentally using prototypes when I want the native javascript
> function? Or does Event.element() return a string to alert but
> something else otherwise? Is there any way to get the string displayed
> in the alert into a form I _can_ use .match(//) on?
>
> Confused again,
> Sean
>
>
> >
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