Navigator.productSub

Deprecated: This feature is no longer recommended. Though some browsers might still support it, it may have already been removed from the relevant web standards, may be in the process of being dropped, or may only be kept for compatibility purposes. Avoid using it, and update existing code if possible; see the compatibility table at the bottom of this page to guide your decision. Be aware that this feature may cease to work at any time.

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

Syntax

prodSub = navigator.productSub

prodSub is a string.

Example

<script>
function prodsub() {
  var dt = document.getElementById("d").childNodes[0];
  dt.data = 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
HTML Standard (HTML) # dom-navigator-productsub-dev

Browser compatibility

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	WebView Android	Chrome Android	Firefox for Android	Opera Android	Safari on IOS	Samsung Internet
`productSub`	1 Always returns `20030107`.	12 Always returns `20030107`.	1	No	15 Always returns `20030107`.	1 Always returns `20030107`.	1 Always returns `20030107`.	18 Always returns `20030107`.	4	14 Always returns `20030107`.	1 Always returns `20030107`.	1.0 Always returns `20030107`.

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https://developer.mozilla.org/en-US/docs/Web/API/Navigator/productSub