The version
property of the IDBDatabase
interface is a 64-bit integer that contains the version of the connected database. When a database is first created, this attribute is an empty string.
Note: This feature is available in Web Workers.
Syntax
var myInteger = IDBDatabase.version;
Value
An integer containing the version of the connected database.
Example
// Let us open our database var DBOpenRequest = window.indexedDB.open("toDoList", 4); // these two event handlers act on the database // being opened successfully, or not DBOpenRequest.onerror = function(event) { note.innerHTML += '<li>Error loading database.</li>'; }; DBOpenRequest.onsuccess = function(event) { note.innerHTML += '<li>Database initialised.</li>'; // store the result of opening the database in the db variable. This is used a lot below db = DBOpenRequest.result; // This line will log the version of the connected database, which should be "4" console.log(db.version); };
Specifications
Specification | Status | Comment |
---|---|---|
Indexed Database API The definition of 'version' in that specification. |
Recommendation | |
Indexed Database API 2.0 The definition of 'version' in that specification. |
Editor's Draft |
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 example live.)