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 compatibility

Update compatibility data on GitHub

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`buildID` Non-standard	Chrome No support No	Edge No support No	Firefox Full support 64 Notes Full support 64 Notes Notes Returns a fixed timestamp as a privacy measure - `20181001000000`. Full support 2	IE ?	Opera ?	Safari ?	WebView Android No support No	Chrome Android No support No	Firefox Android Full support 64 Notes Full support 64 Notes Notes Returns a fixed timestamp as a privacy measure - `20181001000000`. Full support Yes	Opera Android ?	Safari iOS ?	Samsung Internet Android No support No

Legend

Full support: Full support
No support: No support
Compatibility unknown: Compatibility unknown
Non-standard. Expect poor cross-browser support.: Non-standard. Expect poor cross-browser support.
See implementation notes.: See implementation notes.