If your function returns a Dojo store object then you can access it's contents through the use of it's query() function like so
var store;
function dataBind(servletPath){
return store = Observable(Cache(Memory({data:[{"colNo":1,"colMemberId":108}]}), Memory()));
}
console.log("store: ", dataBind().query({}));
Calling the query function with an empty object as a parameter will return an array containing the entire contents of the store.
Documentation: http://dojotoolkit.org/reference-guide/1.10/dojo/store/Memory.html
Here is a jsFiddle example : http://jsfiddle.net/kagant15/y7ec4byk/4/