javascript - Setting properties of object to undefined deallocates memory? -

i have lot of collections lot of records , need manage them, loading , unloading them depending on think user going need.

the collections like:

{     users {         1: {             id: 1,             name: 'jhon',         },         2: { ... },         ...     },     products: { ... } }

i using redux cannot mutate collections make changes on them, have redeclare them. need purge users collection users, except 1 logged application.

to assign undefined of users purge, operation (of course don't manually write every id):

{     users: {          ...users,          1: undefiend,          2: users[2],         3: undefined         ...      } }

¿does deallocate memory used whole collection?

Look