8 Introduction to Facelets. Again, we suffer from ugly JSF implementation of UOutput component. Attributes: Name: Required: Request-time: Type: Description: binding: false: false: javax.el.ValueExpression (must evaluate to javax.faces.component.UIComponent) Value binding expression to a backing bean property bound to the component instance for the UIComponent created by this custom action. JSF provides a special set of tags that gives the flexibility to manage common tags/parts in one place for more than one application. In JSF 2.0, you can use Facelets tags to provide a standard web interface layout easily, in fact, itâs look similar with Apache Tiles framework.. onclick - an optional script event handler for onclick event; I even read in the articles that using JSTL with JSF is not a good idea.  Output will contain all mentioned    These tags provide flexibility to manage common parts of multiple pages at one place.  For example, the following code shows how to return different page name for different pageId value. jsf - Conditionally including a Facelet file via - i have 2 facelets files (index.xhtml , report.xhtml). onchange - an optional script event handler for onchange event. Be sure, this won't work either (it may work but not as you would expect). In this example, it shows the use of 4 Facelets tags to build page from a template :            3: Create result.xhtml in the webapps directory as explained below. where ex:object() is a function defined like this: public static Object object(final Object value)   style="#{ex:object(style)}" public String toString()        Facelets is a part of the JavaServer Faces specification and also the preferred presentation technology for building JavaServer Faces technologyâbased applications. All comments require the approval of the site owner before being displayed.    Facelets are thread-safe and can easily be used in large scale deployments by multiple requests at once.        Step Description; 1: Create a project with a name helloworld under a package com.tutorialspoint.test as explained in the JSF - First Application chapter. Click on Validate   onclick="#{ex:object(onclick)}"/>.   class="#{ex:object(class)}" string is not valid id". Keep rest of the files unchanged. id - an optional id;