Process data from return by an ajax request, but outside the callback function

I have this code.

/*
   Get the source of the data.
*/

if (if_the_source_is_an_url) {

  $.getJSON(url_here, function(returnedData){ theData = returnedData; });

}

/*
   Here we have the default processing of theData.
*/

So i need that if the user provides an url, the retured data will be processed but outside of the callback function, becouse i need to reuse the data processing code. So, i came with this ideas.

• Use the break command $.getJSON(url_here, function(returnedData){ theData = returnedData; break;});
• Change to an $.ajax request but with async: false

• just put the data processing inside a function and call it from the

  callback function.

  if (url) $.getJSON(url_here, function(returnedData){ customFunction(returnedData); }); else customFunction(defaultData);

Any ideas if this will work (i did not teste开发者_运维技巧d it becouse im not at home), or are there better practices for this?

Attach handlers/functions using jQuery.ajaxComplete to filter/transform/etc your data. The handles your attach here will be called for all of your ajax requests