# Built-in GutenBricks Dynamic Data

<table><thead><tr><th width="296.1015625">Data Key</th><th>What For</th></tr></thead><tbody><tr><td>{gb_block_id}</td><td>Unqiue ID for block.</td></tr><tr><td>{gb_element_id}</td><td>The element ID. Note: Sometimes element ID can be empty. </td></tr><tr><td>{gb_query_index}</td><td>(since 1.1.20) index of the query item. Important: This does not work in Dynamic Class.</td></tr><tr><td>{gb_event_block_load}</td><td>JavaScript Event when Block is loaded in Gutenberg editor. See<a data-mention href="../resources/developer-api/gutenbricks-events-for-gutenberg-editor">gutenbricks-events-for-gutenberg-editor</a></td></tr><tr><td>{gb_event_block_remove}</td><td>JavaScript Event when Block is removed in Gutenberg editor. See<a data-mention href="../resources/developer-api/gutenbricks-events-for-gutenberg-editor">gutenbricks-events-for-gutenberg-editor</a></td></tr><tr><td>{gb_event_block_prerender}</td><td>JavaScript Event when Block is pre-rendered in Gutenberg editor. See<a data-mention href="../resources/developer-api/gutenbricks-events-for-gutenberg-editor">gutenbricks-events-for-gutenberg-editor</a></td></tr></tbody></table>