diff --git a/1-js/04-object-basics/07-optional-chaining/article.md b/1-js/04-object-basics/07-optional-chaining/article.md index e4a138d7..8d98c528 100644 --- a/1-js/04-object-basics/07-optional-chaining/article.md +++ b/1-js/04-object-basics/07-optional-chaining/article.md @@ -101,6 +101,10 @@ alert( user?.address ); // undefined alert( user?.address.street ); // undefined ``` +Please note: the `?.` syntax makes optional the value before it, but not any further. + +E.g. in `user?.address.street.name` the `?.` allows `user` to be `null/undefined`, but it's all it does. Further properties are accessed in a regular way. + ```warn header="Don't overuse the optional chaining" We should use `?.` only where it's ok that something doesn't exist.