The version property of the IDBVersionChangeEvent interface returns The new version of the database in a versionchange transaction.

Warning: While this property is still implemented in older browsers, the latest specification replaces it with the oldVersion and newVersion attributes. See the compatibility table to know what browsers support them.


readonly    attribute unsigned long long? version;


A 64-bit integer.


Specification Status Comment
Indexed Database API
The definition of 'IDBVersionChangeEvent' in that specification.
Candidate Recommendation  

Browser compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
version 12 webkit

From 4.0 (2.0) to

9.0 (9.0) moz

Not supported Not supported Not supported
oldVersion 23webkit

10.0 (10.0) moz
16.0 (16.0)

10, partial 15 7.1
newVersion 23webkit

10.0 (10.0) moz
16.0 (16.0)

10, partial 15 7.1
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 Not supported

See also

Document Tags and Contributors

 Contributors to this page: chrisdavidmills, fscholz
 Last updated by: chrisdavidmills,