How to get pseudo element in js?

Question

css

How can a pseudo element be accessed in JavaScript? It is not in the DOM - it turns out that in no way. But it is very necessary, I can not change the structure of the document. Some kind of crutch is needed.

Answer 1

There is no way to get the :before and :after pseudo-element from js. But you can change the class of their parent and, depending on this class, change the styles of pseudo-elements.