navigator.buildID

Returns the build identifier of the browser. In modern browsers this property now returns a fixed timestamp as a privacy measure, e.g. 20181001000000 in Firefox 64 onwards.

Syntax

buildID = navigator.buildID;

Value

A string representing the build identifier of the application. The build ID is in the form YYYYMMDDHHMMSS.

Example

console.log(window.navigator.buildID);

Specification

Not part of any public standard.

Browser compatibilityUpdate compatibility data on GitHub

See also

• navigator.buildID now returns a fixed timestamp