getAllKeys() method of the
IDBObjectStore 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.
var request = objectStore.getAllKeys(); var request = objectStore.getAllKeys(query); var request = objectStore.getAllKeys(query, count);
- query Optional
- A value that is or resolves to an
- count Optional
- Specifies the number of values to return if more than one is found. If it is lower than
0or greater than
TypeErrorexception will be thrown.
IDBRequest object on which subsequent events related to this operation are fired.
This method may raise a
DOMException of one of the following types:
The key or key range provided contains an invalid key or is null.
|Indexed Database API 2.0
The definition of 'getAllKeys()' in that specification.