IDBDatabase: version property
Note: This feature is available in Web Workers.
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.
Value
An integer containing the version of the connected database.
Examples
js
// Let us open our database
const DBOpenRequest = window.indexedDB.open("toDoList", 4);
// these two event handlers act on the database
// being opened successfully, or not
DBOpenRequest.onerror = (event) => {
note.appendChild(document.createElement("li")).textContent =
"Error loading database.";
};
DBOpenRequest.onsuccess = (event) => {
note.appendChild(document.createElement("li")).textContent =
"Database initialized.";
// 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 |
---|
Indexed Database API 3.0 # ref-for-dom-idbdatabase-version① |
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).