javascript - How Do These Callbacks Fit Into A Configuration Object? -

i loving gridster.js, can't figure out how use callbacks. documentation states following can passed gridster configuration object:

draggable.stop: function(event, ui){} // callback when dragging stops. 

here i'm trying error uncaught syntaxerror: unexpected token . on draggable.stop line.

var gridster = $(".gridster ul").gridster({                         widget_margins: [5, 5],                         widget_base_dimensions: [90, 90],                         draggable.stop: function(){console.log("drag completed")}                     }).data('gridster'); 

what correct syntax use here?

it seems mean draggable option provide needs object literal, , specify stop property callback. like:

var gridster = $(".gridster ul").gridster({                    widget_margins: [5, 5],                    widget_base_dimensions: [90, 90],                    draggable: {                        stop: function () {                            console.log("drag completed");                        }                    }                }).data("gridster"); 

seems confirmed here: https://github.com/ducksboard/gridster.js/issues/18