Non-standard
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 BluetoothRemoteGATTCharacteristic.readValue() method returns a Promise that resolves to a DataView holding a duplicate of the value property if it is available and supported. Otherwise it throws an error.
Syntax
BluetoothRemoteGATTCharacteristic.readValue().then(function(dataView) { ... })
Returns
A Promise that resolves to an DataView.
Specifications
| Specification | Status | Comment |
|---|---|---|
| Web Bluetooth The definition of 'readValue()' in that specification. |
Draft | Initial definition. |
Browser Compatibility
| 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 | ? | ? | ? | ? | ? | 48.0 [2] |
[1] Behind a flag. Chrome OS only.
[2] Behind a flag. Requires Android 6 (Marshmallow).