Unable to execute javascript from backing bean

Question

Hello experts,  I want to execute  javascript function from backing bean method.   
In my .jsff  page,  I have added  the javascript as :
<jsp:root  ..... >
<af:resource type="javascript" >
          function fileDownloadJS() {
                            alert(" tesing js from backing bean");
    </af:resource>
</jsp:root>
in my backing bean method  :
public void callJSfuntion(ActionEvent actionEvent) {
        RenderKit rk = FacesContext.getCurrentInstance().getRenderKit();
        ExtendedRenderKitService erks = (ExtendedRenderKitService) Service.getService(rk, ExtendedRenderKitService.class);
        erks.addScript(context, "fileDownloadJS();");
I have table in my .jsff page,   inside table column,  I have command link  and when I click the link,   I am invoking bean method  :
<af:table  ....>
    <af:column sortProperty="title" sortable="true"  
                       headerText="File name" width="250px" id="Title"
                       clientComponent="true">
              <af:commandLink   id="cl1"    actionListener="#{MyBean.callJSfuntion}" clientComponent="true">  
                <af:outputText value="#{row.title}" id="ot1"/> 
              </af:commandLink>
     </af:column>
.</table>
But when  I  run my taskflow and  click on  the link inside the table column,    JS function is not invoked.
Absolutely  no clue what  is the issue.
Appreciate if you can  help me out to resolve this issue.   Thank you.

Answer 1

For debugging purpose can you try :
<script type="javascript" >
          function fileDownloadJS() {
                            alert(" tesing js from backing bean");
</script>
put it on top of the page and let me know what happens.
If it doesn't work try writing the function itself in your addScript(context, script); to see if it works.