Hi Santhosh,

Please refer the below link to achieve your requirement. You need to custom java code inside the activity to achieve this.

http://stackoverflow.com/questions/22856279/call-external-javascript-functions-from-java-code

Hi Santhosh ,

Using activity we can achieve execute javascript.Add Show-HTML one of the step.Create HTML stream and include the javascript code. Try to call the function in the code.

<script>

function testFunc(){

alert("calling the function");

}

testFunc();

</script>