IDBObjectStore

IndexedDB indexeddb

Baseline: Widely available on the web, in every major browser since Sep 2021, and long enough to count on (since Mar 2024).

niso: Partial 95%. 2929 of 3061 subtests pass, by system: Linux 95%, macOS 95%. Engines: QuickJS, the engine niso's WPT run uses; Node and Porffor have no recorded run. WPT results recorded at f3b4fa8, 2026-11-10; web-features 3.45.0. WPT tests · niso's support · IDBCursor, IDBCursorWithValue, IDBDatabase, IDBFactory

IDBObjectStore is an interface in idl/indexeddb.webidl, exposed in Window, Worker. What it does is on MDN; this page says what niso has of it.

Status

The web features its members belong to, each with its Baseline status on the web and how much of the feature’s WPT suite passes in niso (see Web platform support).

Feature	On the web	In niso	Members
IndexedDB	Widely available	Partial 95% 2929 of 3061 subtests pass	20
IndexedDB getAllRecords()	Limited availability	Full 108 of 108 subtests pass	1

Members

name

attribute

attribute DOMString name;

int32_t niso_idb_object_store_get_name(niso_dom* dom, niso_handle self, niso_str* out);
int32_t niso_idb_object_store_set_name(niso_dom* dom, niso_handle self, const char* value, size_t value_len);

keyPath

attribute

[SameObject] readonly attribute any keyPath;

int32_t niso_idb_object_store_get_key_path(niso_dom* dom, niso_handle self, niso_bytes* out);

[SameObject]: the standard returns the same Array each time.

indexNames

attribute

readonly attribute DOMStringList indexNames;

int32_t niso_idb_object_store_get_index_names(niso_dom* dom, niso_handle self, niso_handle* out);

transaction

attribute

[SameObject] readonly attribute IDBTransaction transaction;

int32_t niso_idb_object_store_get_transaction(niso_dom* dom, niso_handle self, niso_handle* out);

autoIncrement

attribute

readonly attribute boolean autoIncrement;

int32_t niso_idb_object_store_get_auto_increment(niso_dom* dom, niso_handle self, bool* out);

put()

operation

[NisoGlue, NewObject] IDBRequest put(any value, optional any key);

add()

operation

[NisoGlue, NewObject] IDBRequest add(any value, optional any key);

delete()

operation

[NisoGlue, NewObject] IDBRequest delete(any query);

clear()

operation

[NewObject] IDBRequest clear();

int32_t niso_idb_object_store_clear(niso_dom* dom, niso_handle self, niso_handle* out);

get()

operation

[NisoGlue, NewObject] IDBRequest get(any query);

getKey()

operation

[NisoGlue, NewObject] IDBRequest getKey(any query);

getAll()

operation

[NisoGlue, NewObject] IDBRequest getAll(optional any queryOrOptions, optional [EnforceRange] unsigned long count);

getAllKeys()

operation

[NisoGlue, NewObject] IDBRequest getAllKeys(optional any queryOrOptions, optional [EnforceRange] unsigned long count);

getAllRecords()

operation IndexedDB getAllRecords(): Full

[NisoGlue, NewObject] IDBRequest getAllRecords(optional IDBGetAllOptions options = {});

count()

operation

[NisoGlue, NewObject] IDBRequest count(optional any query);

openCursor()

operation

[NisoGlue, NewObject] IDBRequest openCursor(optional any query, optional IDBCursorDirection direction = "next");

openKeyCursor()

operation

[NisoGlue, NewObject] IDBRequest openKeyCursor(optional any query, optional IDBCursorDirection direction = "next");

index()

operation

IDBIndex index(DOMString name);

int32_t niso_idb_object_store_index(niso_dom* dom, niso_handle self, const char* name, size_t name_len, niso_handle* out);

createIndex()

operation

[NisoGlue, NewObject] IDBIndex createIndex(DOMString name, (DOMString or sequence<DOMString>) keyPath, optional IDBIndexParameters options = {});

deleteIndex()

operation

undefined deleteIndex(DOMString name);

int32_t niso_idb_object_store_delete_index(niso_dom* dom, niso_handle self, const char* name, size_t name_len);

check()

operation not in JS

[NisoInternal] undefined check(boolean write);

int32_t niso_idb_object_store_check(niso_dom* dom, niso_handle self, bool write);

The checks of the steps that read (write false) or write (true): the object store is not deleted, the transaction is active, and it is not read-only when writing.

checkPut()

operation not in JS

[NisoInternal] undefined checkPut(boolean keyGiven);

int32_t niso_idb_object_store_check_put(niso_dom* dom, niso_handle self, bool key_given);

add and put’s checks before the key is converted.

putRecord()

operation not in JS

[NisoInternal] IDBRequest putRecord(any value, any key, boolean noOverwrite);

int32_t niso_idb_object_store_put_record(niso_dom* dom, niso_handle self, const uint8_t* value, size_t value_len, const uint8_t* key, size_t key_len, bool no_overwrite, niso_handle* out);

add and put’s steps after the value is cloned; key is undefined when not given.

query()

operation not in JS

[NisoInternal] IDBRequest query(unsigned short operation, any range, unsigned long count, unsigned short direction);

int32_t niso_idb_object_store_query(niso_dom* dom, niso_handle self, uint16_t operation, const uint8_t* range, size_t range_len, uint32_t count, uint16_t direction, niso_handle* out);

A request that reads or deletes records: operation is get (0), getKey (1), getAll (2), getAllKeys (3), getAllRecords (4), count (5), delete (6), openCursor (7) or openKeyCursor (8); direction is the IDBCursorDirection’s index, and a count of 0 is no limit.

makeIndex()

operation not in JS

[NisoInternal] IDBIndex makeIndex(DOMString name, any keyPath, boolean unique, boolean multiEntry);

int32_t niso_idb_object_store_make_index(niso_dom* dom, niso_handle self, const char* name, size_t name_len, const uint8_t* key_path, size_t key_path_len, bool unique, bool multi_entry, niso_handle* out);

createIndex’s steps after its arguments are converted.

Not in niso yet

Members the web has, by the BCD keys web-features 3.45.0 lists, that idl/ doesn’t declare. The list is partial: web-features lists only the keys it maps to a feature.

• worker_support (IndexedDB)