Invoke javascript method from server side

Question

I want to execute a javascript method from server side. In my case, when i change a tab, in managed bean i want to call the javascript method. Is there any way to do this?

I tried using RequestContext. But it doesnot get called until the listener method finishes executing.

RequestContext executes a javascript after current ajax request is completed. I want to exceute the javascript method at the start of the ajax request.

The javascript method (which i want to invoke) is wriiten at the client side.

Went through http://metoojava.wordpress.com/2010/06/20/execute-javascript-from-java/ and http://docs.oracle.com/javase/6/docs/technotes/guides/scripting/programmer_guide/index.html

But didnot find the solution to this problem.

Using jsf 2.1 and primefaces 4.0.

My code is

XHTML

   <p:tabView id="detailsId" widgetVar="detailsVar" >
        <p:ajax event="tabChange"  listener="#{mywBean.onTabChange}"/>
        <p:tab title="Service">
        </p:tab>
        <p:tab title="Books">
        </p:tab>
    </p:tabView>

<script>

function myJavascriptMethod() {
     alert("Hello All..");
     // Some functionality
}

</script>

Managed Bean

 public void onTabChange(TabChangeEvent event) {
        String tabId = event.getTab().getId();
        if(tabId.equalsIgnoreCase("Books")) {
           **need to call javascript method here**
          //Some Functionality
        }
    }

BlackBlaze · Accepted Answer · 2014-11-07 07:45:32Z

2

You can try:

String js="alert('Hello World!!')"; // write your javascript
RequestContext.getCurrentInstance().execute(js);

Javadoc:

http://www.primefaces.org/docs/api/4.0/org/primefaces/context/RequestContext.html#execute(java.lang.String)

answered Nov 7, 2014 at 7:45

BlackBlaze

2542 silver badges10 bronze badges

Sign up to request clarification or add additional context in comments.

3 Comments

mehere Over a year ago

RequestContext executes a javascript after current ajax request is completed. I want to exceute the javascript method at the start of the ajax request.

BlackBlaze Over a year ago

Why not execute your javascript first and when it finished, call your Managed Bean?

BlackBlaze Over a year ago

You can use PrimeFaces remote command component (<p:remoteCommand>). primefaces.org/showcase/ui/ajax/remoteCommand.xhtml

Collectives™ on Stack Overflow

Invoke javascript method from server side

1 Answer 1

3 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

3 Comments

Your Answer

Sign up or log in

Post as a guest

Related