I have this:

<h:inputText value="#{user.name}"...>
<f:ajax event="onkeyup" render="echo"/>
</h:inputText>
...
<h:outputText id="echo" value="#{user.name}"/>

That works fine. As I type in the input, whatever I type is echoed by the output. But if I remove the event attribute, like this:

<h:inputText value="#{user.name}"...>
<f:ajax render="echo"/>
</h:inputText>
..
<h:outputText id="echo" value="#{user.name}"/>

For the preceeding markup, nothing is echoed as I type, or when I tab out of the field. In fact, the only thing that happens is that I get a JS error that says "sendAjaxRequest is not defined".

Is this a bug?

I've attached a snapshot of the error in Firebug.

Thanks,

david