IDBDatabase: close() method
The close()
method of the IDBDatabase
interface returns immediately and closes the connection in a separate thread.
The connection is not actually closed until all transactions created using this connection are complete. No new transactions can be created for this connection once this method is called. Methods that create transactions throw an exception if a closing operation is pending.
Note: This feature is available in Web Workers
Syntax
js
close()
Parameters
None.
Return value
None (undefined
).
Examples
js
// Let us open our database
const DBOpenRequest = window.indexedDB.open("toDoList", 4); // opening a database.
// Create event handlers for both success and failure of
DBOpenRequest.onerror = (event) => {
note.innerHTML += "<li>Error loading database.</li>";
};
DBOpenRequest.onsuccess = (event) => {
note.innerHTML += "<li>Database initialized.</li>";
// store the result of opening the database in the db variable.
db = DBOpenRequest.result;
// now let's close the database again!
db.close();
};
Specifications
Specification |
---|
Indexed Database API 3.0 # ref-for-dom-idbdatabase-close② |
Browser compatibility
BCD tables only load in the browser
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).