# Alpine.js Documentation - Directives Alpine directives are attributes that you can add to HTML elements to give them special behavior. ## [x-ref](/directives/ref) `x-ref` in combination with `$refs` is a useful utility for easily accessing DOM elements directly. It's most useful as a replacement for APIs like `getElementById` and `querySelector`. ``` Hello 👋 ``` Hello 👋 > Despite not being included in the above snippet, `x-ref` cannot be used if no parent element has `x-data` defined. [→ Read more about `x-data`](/directives/data) [← x-ignore](/directives/ignore) [x-cloak →](/directives/cloak) Code highlighting provided by [Torchlight](https://torchlight.dev/)