Hi Sarah,
Certainly, you can register your own listener. Like you said, if you
can do it with XForms events, it is better to go that route, but in
this case you'd like to catch some keys before they are even displayed
by the input field, so JavaScript is the way to go. In essence,
something as follows should do the trick:
<xforms:input ref=".">
<xxforms:script ev:event="xforms-enabled">
var input = ORBEON.util.Dom.getElementByTagName(this, "input");
YAHOO.util.Event.addListener(input, "keydown", function(event) {
// Do something with event.keyCode
});
</xxforms:script>
</xforms:input>
Alex
On Wed, May 5, 2010 at 5:35 PM, Sarah Wojtaszak
<
[hidden email]> wrote:
>
> Hi All
>
>
> Has anyone managed to use javascript within their orbeon XForm to validate
> (via prevention) user input?
>
>
> The solution i'm looking for is to prevent users from typing an alpha
> character in a numeric field. Preferably we'd like javascript (keypress
> event) to stop any character other than 1-9 from being displayed in the
> field.
>
>
> Our only solution at this stage is to use the xforms-value-changed event to
> remove any alpha characters from the input field. This is not ideal as it
> changes the input without the users knowing it.
>
> The 'age' field example in the orbeon sandbox, uses validation to tell the
> user that they have provided invalid input, but it doesn't stop a user from
> entering an age of 'three'.
>
>
> Thanks.
> Sarah.
>
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