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.

The BluetoothGATTService.isPrimary read-only property returns a Boolean that indicates whether this is a primary service. If it is not a primary service, it is a secondary service.


var isPrimary = BluetoothGATTService.isPrimary




Specification Status Comment
Web Bluetooth
The definition of 'isPrimary' in that specification.
Draft Initial definition.

Browser Compatibility

We're converting our compatibility data into a machine-readable JSON format. This compatibility table still uses the old format, because we haven't yet converted the data it contains. Find out how you can help!

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support 45.0 [1] ? ? ? ?
Feature Android Android Webview Firefox Mobile (Gecko) Firefox OS IE Mobile Opera Mobile Safari Mobile Chrome for Android
Basic support No support No support ? ? ? ? ? No support

[1] Behind a flag.  Chrome OS only.

Document Tags and Contributors

 Contributors to this page: chrisdavidmills, jpmedley, rolfedh
 Last updated by: chrisdavidmills,