gistfile1.js

function setNestedJSON (path, value, obj, separator) {
	console.log(obj)
	separator = separator || "-"
	obj = obj || {} 
	if (typeof path != 'object') {path = path.split(separator)}
	if (path.length == 1) { 
		obj[path] = value
	}else{
		obj[path[0]] = arguments.callee(path.slice(1), value, obj[path[0]])
	};
	return obj
}