What is the garbage collection algorithm in Chrome?

Question

JavaScript

It's not entirely clear to me how garbage collection is carried out in the same Chrome.

There are questions: Now basically all modern browsers support the Mark-and-sweep algorithm? Only IE works on the principle of reference counting?

If the answers to all these questions are yes, then it’s not entirely clear to me how the Mark-and-sweep algorithm itself works. It turns out that this algorithm actually works only with links? Global variables, it does not clear functions at all?