In Js How to wrap all last childred of an oject tree?

Question

Just wanted to write some recursion but can't check if the child is in fact some finite thing, when checking throught jQuery.isPlainObject , just getting a saparate letters as a childs , like I want "this is error message" - to be a last child , but can't detect it

Answer 1

Shot in the dark here:

typeof "hello" === "string"

typeof {} === "object"

With this, you can tell if the child is a string ("this is error message") or another type of object.