I think the parsing rules must be:
- JSF EL binding expressions only works within jsf tags
- jsf tags evaluation take precedence over jsp and html tags
I just recalled that JSP EL works with JSF managed beans. The following
should work. Take note that it is $, not #.
<body onload="displayMessage('${mainMenu.alertMessage}')">
-----Original Message-----
From: Warren Bell [mailto:[EMAIL PROTECTED]
Sent: Thursday, 10 November 2005 2:27 PM
To: MyFaces Discussion; [EMAIL PROTECTED]
Subject: RE: JavaScript alert() window
It looks like <h:outputText value="#{mainMenu.alertMessage}"/> will be
evaluated and inserted anywhere on the page as long as it is not within
another tag. You would have issues of what gets parsed first if it was
within another tag.
Example:
<h:outputText value="<h:outputText value="<h:outputText value="<h:outputText
value="#{mainMenu.alertMessage}"/>"/>"/>"/>
> -----Original Message-----
> From: Yee CN [mailto:[EMAIL PROTECTED]
> Sent: Wednesday, November 09, 2005 9:52 PM
> To: 'MyFaces Discussion'
> Subject: RE: JavaScript alert() window
>
>
> Ah - I see. <body> is not a jsf tag. But then why don't you get literal
> "<h:outputText value="#{mainMenu.alertMessage}"/>"?
>
> I think how .jsp file is being parsed is not clear at all.
>
> Anyway it is good to know that it works.
>
> Yee
>
> -----Original Message-----
> From: Warren Bell [mailto:[EMAIL PROTECTED]
> Sent: Thursday, 10 November 2005 1:06 PM
> To: MyFaces Discussion
> Subject: RE: JavaScript alert() window
>
> I was able to get it to work with:
>
> <body onload="displayMessage('<h:outputText
> value="#{mainMenu.alertMessage}"/>')">
>
> This evaluated correctly and gave me an alert window with the message.
>
> <body onload="displayMessage('#{mainMenu.alertMessage}')">
>
> This gave me an alert window with the literal message
> #{mainMenu.alertMessage}
>
> > -----Original Message-----
> > From: Simon Kitching [mailto:[EMAIL PROTECTED]
> > Sent: Wednesday, November 09, 2005 7:53 PM
> > To: MyFaces Discussion
> > Subject: Re: JavaScript alert() window
> >
> >
> > Warren Bell wrote:
> > > I want to create a JavaScript alert window with a message from
> > a resource
> > > bundle when I have a message to display. Getting the message is
> > no problem,
> > > but getting it into the JavaScript is.
> > >
> > > <script language="JavaScript" type="text/JavaScript">
> > > function displayMessage()
> > > {
> > > var message = "MESSAGE HERE";
> > > if(message == "")
> > > {
> > > }
> > > else
> > > {
> > > alert(message);
> > > }
> > > }
> > > </script>
> > >
> > > <body onload="displayMessage()">
> > >
> > >
> > > I want to replace "MESSAGE HERE" with #{mainMenu.alertMessage}.
> > > #{mainMenu.alertMessage} would be an empty string or have a
> > message. I am
> > > getting var message = "#{mainMenu.alertMessage}" instead of
> the value of
> > > #{mainMenu.alertMessage}.
> > >
> > > Is there a way using MyFaces to achieve this?
> >
> > I think in the next release of JSP this will be possible (EL expressions
> > evaluated in the body of the JSP page). However that's no consolation
> > for you now :-) [and I might be wrong anyhow...]
> >
> > Right now, the only place an EL expression #{..} is evaluated is in the
> > attribute of a JSF tag, so your approach above won't work.
> >
> > You might be able to do something like this:
> > <t:div style="display:none" id="mymessage" forceid="true">
> > <h:outputText value="#{...}"/>
> > </t:div>
> > to force some text to be output in a named div, but not visible to the
> > user. Then in your javascript you could do:
> > var message = document.getElementById("mymessage").innerHtml();
> > alert(message);
> >
> > The alternative would be to write a component that can emit arbitrary
> > text as a script variable, eg
> > <t:var name="message" value="#{...}"/>
> > which generates something like:
> > <script>var message="..."</script>
> >
> > There's the t:stylesheet tag which is sort of in this spirit.
> >
> > Note that writing a custom JSP component is sadly much more complicated
> > than it should be :-(
> >
> > Regards,
> >
> > Simon
> >
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> >
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> >
> >
>
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