MDN wants to learn about developers like you:

The preceding-sibling axis indicates all the nodes that have the same parent as the context node and appear before the context node in the source document.

Document Tags and Contributors

 Contributors to this page: SphinxKnight, Fredchat, Sheppy, Mgjbot, Takenbot, Ptak82, CitizenK, Dria
 Last updated by: SphinxKnight,