function testing(){
    var e = document.getElementById("selectBranchId");
    var strUser = e.options[e.selectedIndex].value; 
    return strUser;
}
function test(){
    var resultValue = testing();
    alert(resultValue);
}
How can I get the value of resultValue in JSP? I tried using request.setAttribute but I am getting error variable resultValue can't be resolved. What can be the solution?
                        
As JavaScript runs on the client side and JSP/Scriptlet is running on the server-side.
So if you want to access any of your JavaScript variable in JSP/Java/Server Side, then either