IDBEnvironment Redirect 1

« IDBEnvironment

The IDBEvironment interface of the IndexedDB API provides asynchronous access to a client-side database. It is implemented by window and Worker objects.


IDBEnvironment.indexedDB Read only
Provides a mechanism for applications to asynchronously access capabilities of indexed databases.


The following code opens a database asynchronously and makes a request.

var db;
function openDB() {
 var request ="toDoList");
 request.onsuccess = function(e) {
   db = request.result;


Specification Status Comment
Indexed Database API Candidate Recommendation  

Browser compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support 12webkit
4.0 (2.0) 10 17 Not supported
Feature Android Firefox Mobile (Gecko) Firefox OS IE Phone Opera Mobile Safari Mobile
Basic support 4.4 6.0 (6.0) 1.0.1 10 17 Not supported

Be careful in Chrome as it still implements the old specification along the new one. Similarly it still has the prefixed webkitIndexedDB property even if the unprefixed indexedDB is present.

See also

To learn more about various topics, see the following

  • Starting transactions: IDBDatabase
  • Setting transaction modes: IDBTransaction
  • Setting a range of keys: IDBKeyRange
  • Creating cursors: IDBIndex
  • The reference application for the examples in this reference: To-do Notifications (view example live.) Not every snippet appears in this example, but every example uses the same data structure and syntax, and will make sense in the context of this application.

Document Tags and Contributors

 Last updated by: teoli,