IDBIndex: getAllKeys() method

Syntax

getAllKeys()
getAllKeys(query)
getAllKeys(query, count)
getAllKeys(options)

Parameters

The getAllKeys() method can take separate parameters or a single options object containing the parameters as properties.

The parameters can include:

query Optional

A key or an IDBKeyRange identifying the keys to retrieve. If this value is null or not specified, the browser will use an unbound key range.

count Optional

The number records to return. If this value exceeds the number of records in the query, the browser will only retrieve the first item. If it is lower than 0 or greater than 2^32 - 1 a TypeError exception will be thrown.

If an object parameter is specified, its properties can include:

query Optional

See the earlier query definition.

count Optional

See the earlier count definition.

direction Optional

An enumerated value specifying the direction in which the objects are traversed. Possible values are:

next

The objects are traversed from the beginning, in increasing key order. This is the default value.

nextunique

The objects are traversed from the beginning, in increasing key order. Keys duplicated across multiple objects are only yielded once.

prev

The objects are traversed from the end, in decreasing key order.

prevunique

The objects are traversed from the end, in decreasing key order. Keys duplicated across multiple objects are only yielded once.

Return value

An IDBRequest object on which subsequent events related to this operation are fired.

If the operation is successful, the value of the request's result property is an Array of the keys for all records matching the given query, up to the value of count, if count was supplied.

Exceptions

This method may raise a DOMException of the following types:

TransactionInactiveError DOMException

Thrown if this IDBIndex's transaction is inactive.

InvalidStateError DOMException

Thrown if the IDBIndex has been deleted or removed.

TypeError DOMException

Thrown if the count parameter is not between 0 and 2^32 - 1, inclusive.

Examples

const myIndex = objectStore.index("index");
const getAllKeysRequest = myIndex.getAllKeys();
getAllKeysRequest.onsuccess = () => {
  console.log(getAllKeysRequest.result);
};

Specifications

Browser compatibility

See also

• Using IndexedDB
• Starting transactions: IDBDatabase
• Using transactions: IDBTransaction
• Setting a range of keys: IDBKeyRange
• Retrieving and making changes to your data: IDBObjectStore
• Using cursors: IDBCursor
• Reference example: To-do Notifications (View the example live).