How to change known address value

Question

As you know we dont have pointers in pyghon or js.
So for example how we can put "10" on 0x014D memory address?

Answer 1

The answer for javascript and python is simple and you already gave it yourself: we can't.

Other programs in languages that support pointers can only access memory assigned to them by the OS. Since this is a dynamic process you only use assigned addresses and operate relative to them (within bounds of assigned memory).

In embedded systems where you don't have OS it is different