How does encapsulation work (I want to see a good illustration for presentation)?

Question

OOP

There are many different images illustrating encapsulation on the Internet. But I haven't found a suitable illustration yet.
Seniors, can you share an illustration that most clearly reflects the encapsulation itself.
Why am I asking.
I have been doing backend and frontend for 2 years. Those. nothing. Over the years, I realized that I am not a layout designer (front-end is essentially the same layout), because. when if the block moved a little but the button works, then I'm fine. But if the block is standing straight, and the button does not work, then I cannot directly stop until it works properly.
Therefore, I decided to go to a clean backend.
I ask for the encapsulation illustration itself because I don’t really understand it. With an understanding of mvc, inheritance, abstraction and polymorphism, everything is fine. But encapsulation is not quite obvious yet.

Answer 1

try learn.javascript.ru/internal-external-interface