Navigator.productSub

The Navigator.productSub read-only property returns the build number of the current browser.

Syntax

prodSub = window.navigator.productSub
  • prodSub is a string.

Example

<script> 
function prodsub() {
  var dt = document.getElementById("d").childNodes[0];
  dt.data = window.navigator.productSub;
} 
</script>

<button onclick="prodsub();">productSub</button>
// returns: 20010725

Notes

On IE, this property returns undefined.

On Apple Safari and Google Chrome this property always returns 20030107.

Specifications

Specification Status Comment
HTML Living Standard
The definition of 'NavigatorID: productSub' in that specification.
Living Standard Initial definition

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
productSub
Deprecated
Chrome Full support 1
Notes
Full support 1
Notes
Notes Always returns 20030107.
Edge Full support 12
Notes
Full support 12
Notes
Notes Always returns 20030107.
Firefox Full support 1IE No support NoOpera Full support 15
Notes
Full support 15
Notes
Notes Always returns 20030107.
Safari Full support 1
Notes
Full support 1
Notes
Notes Always returns 20030107.
WebView Android Full support 1
Notes
Full support 1
Notes
Notes Always returns 20030107.
Chrome Android Full support 18
Notes
Full support 18
Notes
Notes Always returns 20030107.
Firefox Android Full support 4Opera Android Full support 14
Notes
Full support 14
Notes
Notes Always returns 20030107.
Safari iOS Full support 1
Notes
Full support 1
Notes
Notes Always returns 20030107.
Samsung Internet Android Full support 1.0
Notes
Full support 1.0
Notes
Notes Always returns 20030107.

Legend

Full support  
Full support
No support  
No support
Deprecated. Not for use in new websites.
Deprecated. Not for use in new websites.
See implementation notes.
See implementation notes.