The IDBEnvironment interface of the IndexedDB API contains the indexedDB property, which provides access to IndexedDB functionality. It is the top level IndexedDB interface implemented by the window and Worker objects.
Note: This feature is available in Web Workers.
Properties
IDBEnvironment.indexedDBRead only- Provides a mechanism for applications to asynchronously access capabilities of indexed databases; contains an
IDBFactoryobject.
Example
The following code creates a request for a database to be opened asychronously, after which the database is opened when the request's onsuccess handler is fired:
var db;
function openDB() {
var DBOpenRequest = window.indexedDB.open("toDoList");
DBOpenRequest.onsuccess = function(e) {
db = DBOpenRequest.result;
};
}
Specifications
| Specification | Status | Comment |
|---|---|---|
| Indexed Database API The definition of 'IDBEnvironment' in that specification. |
Recommendation |
Browser compatibility
| Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari (WebKit) |
|---|---|---|---|---|---|
| Basic support | 23webkit 24 |
10 moz 16.0 (16.0) |
10, partial | 15 | 7.1 |
| Available in workers | (Yes) | 37.0 (37.0) | ? | (Yes) | ? |
| Feature | Android | Firefox Mobile (Gecko) | Firefox OS | IE Phone | Opera Mobile | Safari Mobile |
|---|---|---|---|---|---|---|
| Basic support | 4.4 | 22.0 (22.0) | 1.0.1 | 10 | 22 | 8 |
| Available in workers | (Yes) | 37.0 (37.0) | (Yes) | ? | (Yes) | ? |
Be careful in Chrome as it still implements the old specification along with the new one. Similarly it still has the prefixed webkitIndexedDB property even if the unprefixed indexedDB is present.
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.)