Pass object through dataTransfer
You should pass the object to JSON.stringify before using setData because you can only store strings.
var j = JSON.stringify(foo);e.originalEvent.dataTransfer.setData("foo", j);And the other way round you have to reconvert the string to an object:
var obj = JSON.parse(e.originalEvent.dataTransfer.getData("foo"));console.log("foo is:", obj);See this working Fiddle
Maybe what I am about to suggest is wrong (if so I will be happy to hear why ).Why not set a variable in the dragstart listener to reference what you need, for example:
//global variablevar obj;//set the global variable to wahtever you wish in the dragstart:$dragme.on("dragstart", function(e) { obj = foo; //or even obj = document.getElementById("some element's id");});//use this obj in the drop listener.$dropzone.on("drop", function(e) { obj.doWahtEver();});