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IDBFactory

The IDBFactory interface of the IndexedDB API lets applications asynchronously access the indexed databases. The object that implements the interface is window.indexedDB. You open — that is, create and access — and delete a database with this object, and not directly with IDBFactory.

Note: This feature is available in Web Workers.

Methods

IDBFactory.open
The current method to request opening a connection to a database.
IDBFactory.deleteDatabase
A method to request the deletion of a database.
IDBFactory.cmp
A method that compares two keys and returns a result indicating which one is greater in value.

Obsolete methods

IDBFactory.open, the original version
An obsolete method to request opening a connection to a database, still implemented by some browsers.

Example

In the following code snippet, we make a request to open a database, and include handlers for the success and error cases. For a full working example, see our To-do Notifications app (view example live.)

var note = document.querySelector("ul");

// In the following line, you should include the prefixes of implementations you want to test.
window.indexedDB = window.indexedDB || window.mozIndexedDB || window.webkitIndexedDB || window.msIndexedDB;
// DON'T use "var indexedDB = ..." if you're not in a function.
// Moreover, you may need references to some window.IDB* objects:
window.IDBTransaction = window.IDBTransaction || window.webkitIDBTransaction || window.msIDBTransaction;
window.IDBKeyRange = window.IDBKeyRange || window.webkitIDBKeyRange || window.msIDBKeyRange;
// (Mozilla has never prefixed these objects, so we don't need window.mozIDB*)

// Let us open version 4 of 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 later on, for opening transactions and suchlike.
  db = DBOpenRequest.result;
};

Specifications

Browser compatibility

Feature Chrome Edge Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support 23 webkit
24 (unprefixed)
38 (prefixes deprecated)
57 (prefixes removed)
(Yes) 10 moz
16.0 (16.0)
10, partial 15
44 (prefixes removed)
7.1
Available in workers (Yes) (unprefixed)
38 (prefixes deprecated)
57 (prefixes removed)
(Yes) 37.0 (37.0) ? (Yes)
44 (prefixes removed)
?
Indexed Database 2.0 58 ? ? ? 45 ?
Feature Android Webview Chrome for Android Edge Firefox Mobile (Gecko) Firefox OS IE Phone Opera Mobile Safari Mobile
Basic support (Yes)
38 (prefixes deprecated)
57 (prefixes removed)
(Yes)
38 (prefixes deprecated)
57 (prefixes removed)
(Yes) 22.0 (22.0) 1.0.1 10 22
44 (prefixes removed)
8
Available in workers (Yes) (unprefixed)
38 (prefixes deprecated)
57 (prefixes removed)
(Yes) (unprefixed)
38 (prefixes deprecated)
57 (prefixes removed)
(Yes) 37.0 (37.0) (Yes) ? (Yes)
44 (prefixes removed)
?
Indexed Database 2.0 58 58 ? ? ? ? 45 ?

See also

© 2005–2018 Mozilla Developer Network and individual contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/IDBFactory