mongodb_shell.js

a = function () {
    for (var i = 0; i < 5; i++) {
        print(i);
    }
}

//expected: print 0 to 4

//value: prints entire function instead of executing it

this prints the entire function because you never call it. so it just prints the result of the last statement/expression, which is the variable a itself. if you then do:

a()

you will get the results printed. I don't think anything else makes sense here - you're defining the function not calling it.

ok! that was a dumbest mistake

no worries - glad it makes sense now :)