This feature is no longer recommended. Though some browsers might still support it, it may have already been removed from the relevant web standards, may be in the process of being dropped, or may only be kept for compatibility purposes. Avoid using it, and update existing code if possible; see the compatibility table at the bottom of this page to guide your decision. Be aware that this feature may cease to work at any time.

Important: The indexedDB property that was previously defined in this mixin is instead now WindowOrWorkerGlobalScope.indexedDB (that is, defined as a member of the WindowOrWorkerGlobalScope mixin).

The IDBEnvironment helper 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.


This feature is available in Web Workers.


IDBEnvironment.indexedDB Read only
Provides a mechanism for applications to asynchronously access capabilities of indexed databases; contains an IDBFactory object.


The following code creates a request for a database to be opened asynchronously, after which the database is opened when the request's onsuccess handler is fired:

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

Browser compatibility

BCD tables only load in the browser

See also