Re: Call Client Side Javascript from Java in JSF
lord.tyranus.96@gmail.com wrote:
On 28 ago, 17:49, Carl <c.gro...@gmail.com> wrote:
Ricardo R??os <ricardo.rios...@gmail.com> writes:
Hello wizards, I have a JSF application, in this application I have a
button, but in the action method for this button I need to call to the
following code:
<SCRIPT language="JavaScript">
<!-- hide from old browsers
alert('Error');
//-->
</SCRIPT>
How can I do that ? It is possible ? Thanks in advance.
This question more a javascript question than a Java/JSF question. But while
you're here I might as well suggest you try putting your javascript statement
in the buttons onClick event handler:
<input type="button" value="Click Me!" onClick="alert('WooHoo!');" />
Hope that helps,
Carl.
Thanks for your reply, but in the action method for this button I need
a server side validation code , for example:
public String button1_action()
{
boolean test = false;
test = this.getSessionBean1.validateForm(this.layoutPanel1);
if (test)
/* Here need to call the following code
<SCRIPT language="JavaScript">
<!-- hide from old browsers
alert('Ok');
//-->
</SCRIPT>
*/
else
/* Here need to call the following code
<SCRIPT language="JavaScript">
<!-- hide from old browsers
alert('Error');
//-->
</SCRIPT>
*/
return null;
}
When you increased the level of specification of your question it changed the
answer.
It sounds like you need something more AJAXish, where you have JS submit to
the server-side validation code then parse the response to decide what dialog
to pop up.
OTOH, as long as you're doing a round-trip to the server to validate anyway,
why not abandon this silly Javascript and just pop up localized error messages
on the JSP itself, a technique supported directly by JSF?
<http://java.sun.com/javaee/javaserverfaces/1.2/docs/tlddocs/h/message.html>
<http://java.sun.com/javaee/javaserverfaces/1.2/docs/tlddocs/h/messages.html>
--
Lew