How do you call a local function?

Question

So heres the basic outline

function x(){
   // some code 
   function y(){
   //some more code
  }
}

function z(){
  // how do i call function y?
}
<         


        

Answer 1

function x(){
   // some code 
  this.y=function(){
   //some more code
  }
}

function z(){
 var fun_x=new x();
fun_x.y();
}

the global namespace is still as it was before this code