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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 AndroidEdge MobileFirefox for AndroidOpera for AndroidiOS SafariSamsung Internet
Basic support
Non-standard
Chrome Full support Yes
Notes
Full support Yes
Notes
Notes Always returns 20030107.
Edge ? Firefox Full support YesIE Full support Yes
Notes
Full support Yes
Notes
Notes Always returns undefined.
Opera ? Safari Full support Yes
Notes
Full support Yes
Notes
Notes Always returns 20030107.
WebView Android ? Chrome Android Full support Yes
Notes
Full support Yes
Notes
Notes Always returns 20030107.
Edge Mobile ? Firefox Android Full support YesOpera Android ? Safari iOS Full support Yes
Notes
Full support Yes
Notes
Notes Always returns 20030107.
Samsung Internet Android ?

Legend

Full support  
Full 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.

Étiquettes et contributeurs liés au document

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Dernière mise à jour par : mfuji09,