Handling AJAX call error on client side

Just put the below code snippet to a JS file as below. (I used  immediately invoked functional expressions)

It is an error listener, it is called when JSF ajax request/response cyle gets an error.

(function jsfAjaxErrorHandler() {
 jsf.ajax.addOnError(function(data) {
   var log = "status:" +  data.status;
   log += " <br> message:" + data.message;
   log += " <br> description:" + data.description;
   log += " <br> serverErrorName:" + data.serverErrorName;
   log += " <br> serverErrorMessage:" + data.serverErrorMessage;
   log += " <br> source:" + data.source;
   log += " <br> responseCode:" + data.responseCode;
   log += " <br> responseText:" + data.responseText;
   log += " <br> responseXML:" + data.responseXML;
   
   alert(log);
 });
})();

Then load your js file but your js file must be loaded after JSF's own 'jsf.js' file.

<h:outputScript library="javax.faces" name="jsf.js"/>
<h:outputScript name="/yours.js" library="js"/> 

How to learn which vendor / version is using in jsf webapp? (MyFaces or Mojarra)

You can run the following code fragment in your application:

import javax.faces.context.FacesContext;

System.out.println("imp title: " + FacesContext.class.getPackage().getImplementationTitle());
System.out.println("impl vendor " + FacesContext.class.getPackage().getImplementationVendor());
System.out.println("imp version: " + FacesContext.class.getPackage().getImplementationVersion());

Sample output:

imp title: Apache MyFaces JSF-2.2 Core API
impl vendor The Apache Software Foundation
imp version: 2.2.11

Execute two methods in action

You can use f:actionListener to execute 2 methods in action:

<a4j:commandbutton action="{method1()}" value="deneme" >                              
   <f:actionlistener binding="#{method2()}"/>
<a4j:commandbutton>

Critical error during deployment: : com.sun.faces.config.ConfigurationException: Factory 'javax.faces.render.RenderKitFactory' was not configured properly

BUG:
I was trying to deploy a JSF (RichFaces) application in JBOSS 7.1.0 and I got following error:

Critical error during deployment: : com.sun.faces.config.ConfigurationException: Factory 'javax.faces.render.RenderKitFactory' was not configured properly

FIX:
Add following parameters to the web.xml:

<listener>     <listener-class>com.sun.faces.config.ConfigureListener</listener-class> </listener>