Recording macros in extjs?

Question

JavaScript

To automate actions on the DOM with unpredictable id, you need to record a macro through the application interface. In such an implementation of the project, the decision to write classes on all elements is not suitable and there is no way to use either silenium or siesta. In principle, I would like to make a universal solution for this problem, implement it through an extension for chrome.
The preliminary idea is to recognize images with some marks and reproduce it inside the browser, but I still have no idea on which set of technologies to do it.