The value of the Navigator.vendorSub property is always the empty string, in any browser.
venSub = window.navigator.vendorSub
| Specification | Status | Comment |
|---|---|---|
| HTML Living Standard The definition of 'NavigatorID: vendorSub' in that specification. | Living Standard | Initial definition |
| Desktop | ||||||
|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | |
| Basic support | Yes | ? | Yes | Yes | 15 | Yes |
| Mobile | |||||||
|---|---|---|---|---|---|---|---|
| Android webview | Chrome for Android | Edge Mobile | Firefox for Android | Opera for Android | iOS Safari | Samsung Internet | |
| Basic support | Yes | Yes | ? | Yes | 15 | Yes | ? |
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https://developer.mozilla.org/en-US/docs/Web/API/navigator/vendorSub