getAllKeys() method of the
interface returns an
IDBRequest object retrieves record keys for all
objects in the object store matching the specified parameter or all objects in the
store if no parameters are given.
If a value is successfully found, then a structured clone of it is created and set as the result of the request object.
This method produces the same result for:
- a record that doesn't exist in the database
- a record that has an undefined value
To tell these situations apart, you need to call the
openCursor() method with the same key. That
method provides a cursor if the record exists, and no cursor if it does not.
getAllKeys() getAllKeys(query) getAllKeys(query, count)
A value that is or resolves to an
Specifies the number of values to return if more than one is found. If it is lower than
0or greater than
2^32 - 1a
TypeErrorexception will be thrown.
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 was supplied.
This method may raise a
DOMException of one of the following types:
Thrown if this
IDBObjectStore's transaction is inactive.
Thrown if the key or key range provided contains an invalid key or is null.
Thrown if the
IDBObjectStorehas been deleted or removed.
|Indexed Database API 3.0 |
BCD tables only load in the browser
- Using IndexedDB
- Starting transactions:
- Using transactions:
- Setting a range of keys:
- Retrieving and making changes to your data:
- Using cursors:
- Reference example: To-do Notifications (View the example live).