Check your version
This tutorial covers a topic in Drupal 7 which may or may not be the version you're using. We're keeping this tutorial online as a courtesy to users of Drupal 7, but we consider it archived.
Create autocomplete fields and menu hooks.
Add an autocomplete field that uses a query from JSON output.
You will need the following knowledge and skills. If you need a review, check out the Additional resources section at the bottom of this page.