ZK ‘Client-Server’ Communication Sample Part 2

In the first part (link) we made a javascript embedded into our zul page send data to the controller with the magic zau.send() function. The reverse can be done too, call a javascript on the zul page from the controller.

Lets continue with the sample from part 1:

  • Add another javascript to the zul page

    Javascript

        <script type="text/javascript">
            function demoFunction(msg){
                alert(msg);
            };
        </script>
    
  • Implement the caller in the controller
    Controller Class

        public void onClick$btnExec(Event evt) throws InterruptedException {
            Clients.evalJavaScript("demoFunction('some Text');");
        }
    
  • Redeploy and run the application

    Running Application

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