javascript - Uncaught TypeError undefined is not a function when called outside of jQuery -

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i'm trying figure out why when call setupcontrolbox within $.getjson call works (in if condition) if call else condition throws undefined error (i set opts.load_url false). call have encapsulated in $.somefunction()?

// load existing form data  if (opts.load_url) {     $.getjson(opts.load_url, function(json) {         form_db_id = json.form_id;         fromjson(json.form_structure);         opts.loaded(json);         var controlbox = setupcontrolbox(opts.control_box_target);     }); } else {     var controlbox = setupcontrolbox(opts.control_box_target);       }


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