1. Web
  2. Web APIs
  3. BluetoothRemoteGATTDescriptor
  4. readValue()

BluetoothRemoteGATTDescriptor: readValue() method

Limited availability

This feature is not Baseline because it does not work in some of the most widely-used browsers.

Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

Secure context: This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.

The BluetoothRemoteGATTDescriptor.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

js
readValue()

Parameters

None.

Return value

A Promise that resolves to a DataView.

Specifications

Specification
Web Bluetooth
# dom-bluetoothremotegattdescriptor-readvalue

Browser compatibility

Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
readValue
Experimental
Chrome – Full support
Chrome 57 (Release date: 2017-03-09)
footnote Full support
Edge – Full support
Edge 79 (Release date: 2020-01-15)
footnote Full support
Firefox – No support
Firefox
footnote
footnote See bug 674737
Opera – Full support
Opera 44 (Release date: 2017-03-21)
footnote Full support
Safari – No support
Safari
footnote
footnote See bug 101034
Chrome Android – Full support
Chrome Android 57 (Release date: 2017-03-16)
footnote Full support
Firefox for Android – No support
Firefox for Android
footnote
footnote See bug 674737
Opera Android – Full support
Opera Android 44 (Release date: 2017-12-11)
footnote Full support
Safari on iOS – No support
Safari on iOS
footnote
footnote See bug 101034
Samsung Internet – Full support
Samsung Internet 7 (Release date: 2018-03-16)
footnote Full support
WebView Android – No support
WebView Android
footnote No support
WebView on iOS – No support
WebView on iOS
footnote
footnote See bug 101034

Tip: you can click/tap on a cell for more information.

Full support
No support
Experimental. Expect behavior to change in the future.
See implementation notes.

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