jquery - Using a MEAN Stack -

i have been developing web application using jquery on html5. on time, code seems have gotten bit complex (over 1300 lines of code) , on front end. there 2 main parts code:

1. reading sensitive data (formatted in json)
2. custom algorithms

the code has number of event listeners. have been advised develop server-client architecture. have been researching mean stack , understand basics not sure how migrate code mean stack. have following queries.

1. how divide code between angular , node?
2. i not wish use mongodb or other nosql read jsons, mean stack allow me that?
3. can still continue using jquery node if not wish use angular?

it sounds can accomplish goals using node , integrating packages npm as-needed.

you can re-implement client-side code using angular better organize taking advantage of mv* patterns.

you not required use mongodb node. can use node's file system api read , write json.

if wish keep using jquery on client-side instead of angular, that's no problem either. however, if you're not using mongodb or angular, you're not using mean stack.