Javascript assigning the return value of a Callback function to global variable

Question

My question is about Javascript. I have a Callback function which receives a Position object on a successful callback.

The problem is that when I try to set the prop

Answer 1

have you tried setting it via the global window object?

//on Successful callback receives a Position Object
function onSuccess(position) {  
  var coords = position.coords;  
    window.x=coords;       // Setting directly to an object does not work x still remains undefined after succesful callback               
return coord; // Trying to set this to a global object 

}

also, since you return the coordinates from the success handler, is there not another way to get this value?