Used below javascript API for getDataPage, which is provided in Javascript API.

<%

String RefreshPSPParam = tools.findPage("pyWorkPage").getString("ActionID");

%>

<script>

 var options = {
                name: "D_PSPToken",
                parameters: [{name: "accessToken", value: '<%=RefreshPSPParam%>', isProperty: true}],
                callback: callbackFunc 
            };

            function callbackFunc(resultJSON){
                console.log(resultJSON)
            }

           pega.api.ui.actions.getDataPage(options);

</script>

but i cannot see the datapage print in the console . need help