The value of the Navigator.vendorSub property is always the empty string, in any browser.
| Specification |
|---|
| HTML> # dom-navigator-vendorsub-dev> |
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Opera | Safari | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | WebView Android | WebView on iOS | |
vendorSub |
1 | 12 | 1 | 15 | 3 | 18 | 4 | 14 | 1 | 1.0 | 4.4 | 1 |
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https://developer.mozilla.org/en-US/docs/Web/API/Navigator/vendorSub