Using an async flow and returning to a variable in the original called function

I understand how to use functions as well as async functions with binding and calling binding. But I have been looking for a solution for the following for a long time.

To figure out why this is not a duplicate: I know how asynchronous calls work. I also understand why the variable is not being updated directly (due to the time difference between the start and end of the call). My question is simplified: is it possible to go back to the original function and populate the variable?

Consider the following pseudo JavaScript code:

var returnedData = loadDataThroughAjax(url);

function loadDataThroughAjax(url)
{
    //here fires an xhrrequest using the specific url

    return xhr.readystatefunction = function()
    {
        if (this.reaystate == 4)
        {
            return this.responseText;
        }
    }


}

      

        
        
        
      

    

I would like the responsetext

call to be loaded into var returnedData

in one thread. I looked at some code jquery

and it looks like you could pull this, or is what I am asking about is not possible for an asynchronous call?