How to get user photo from dialog via VK API?

Question

JavaScript

I get the list of dialogs using the messages.getDialogs method. Next, I need to get the avatar of the person whose dialogue I received. How can I do that?
I saw such a thing as users.get, and so, is it possible to somehow get information from this method through userid? Or are there other options?
At the same time, I'll ask how you can get a photo of the current user (ie, from the owner page itself)?
PS I do everything with JavaScript.

Answer 1

call users.get with a parameter user_idsand with the ones you need fields, for example,
to get the information of the current user, you can not specify user_idsat all

Answer 2

users.get