Question

I just started learning about JSF.
In JSP file we can use <%= request.getAttribute("JsData")%> to get the session data.
How can we get the session data in a Facelets file? For example:

<h:head>
    <script type="text/javascript">
    //<![CDATA[
    var query = jQuery.noConflict();
    function getInitData() {
              getJSData();
        }
    //]]>
    <%= request.getAttribute("JsData")%>
    </script>
</h:head>
<h:body onload="initData();">
<p:commandButton id="loginButton" value="login" ></p:commandButton>
<p:commandButton id="close" value="close" ></p:commandButton>
</h:body>

Answer 1

The JSP scriptlets are indeed fortunately not supported at all in Facelets. Just use EL, like as they introduced over a decade ago in JSP to replace scriptlets.

#{JsData}

This kind of data is in JSF normally to be prepared and served by some managed bean. E.g.

#{someBean.jsData}

---

Unrelated to the concrete problem, the request.getAttribute() does not return session scoped data, it returns request scoped data.