How to track DOM loading in WIX?

Question

JavaScript

Good afternoon.
Surely you have heard about the wix website builder?
You also probably heard a lot of non-local from him: slows down, crooked, and so on.

For example, the price format is displayed as:
> RUB 3.000
This is very crooked.

There is an idea to add a little js to work with the DOM. The formatting script is done, but there is a question: how to track the DOM loading? Because the site is rendered in a very strange way.

Site example here