Indexed DB "batched get" APIs and two other methods that have been implemented in FF for some time * IDBObjectStore.getAll() * IDBObjectStore.getAllKeys() * IDBIndex.getAll() * IDBIndex.getAllKeys() * IDBObjectStore.openKeyCursor() * IDBTransaction.objectStoreNames
Docs: https://developer.mozilla.org/en-US/docs/Web/API/IDBObjectStore/getAll https://developer.mozilla.org/en-US/docs/Web/API/IDBObjectStore/getAllKeys https://developer.mozilla.org/en-US/docs/Web/API/IDBIndex/getAll https://developer.mozilla.org/en-US/docs/Web/API/IDBIndex/getAllKeys https://developer.mozilla.org/en-US/docs/Web/API/IDBObjectStore/openKeyCursor https://developer.mozilla.org/en-US/docs/Web/API/IDBTransaction/objectStoreNames
Samples: https://googlechrome.github.io/samples/idb-getall/index.html