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window.navigator.productSub Redirect 1

« DOM Reference

This feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future.


productSub returns the build number of the current browser.


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


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

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


On IE, this property returns undefined.

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


DOM Level 0. Not part of any standard.

Document Tags and Contributors

 Last updated by: Sheppy,