BluetoothRemoteGATTCharacteristic.readValue()

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

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

Update compatibility data on GitHub

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`readValue` Experimental	Chrome Full support 56 Notes Full support 56 Notes Notes macOS only. Full support 56 Notes Disabled Notes Linux and versions of Windows earlier than 10. Disabled From version 56: this feature is behind the `#enable-experimental-web-platform-features` preference (needs to be set to `enabled`). To change preferences in Chrome, visit chrome://flags. Full support 70 Notes Notes Windows 10.	Edge ?	Firefox No support No	IE No support No	Opera Full support 43 Notes Full support 43 Notes Notes macOS only. Full support 43 Notes Disabled Notes Linux and versions of Windows earlier than 10. Disabled From version 43: this feature is behind the `#enable-experimental-web-platform-features` preference (needs to be set to `enabled`). Full support 57 Notes Notes Windows 10.	Safari ?	WebView Android No support No	Chrome Android Full support 56	Firefox Android No support No	Opera Android Full support 43	Safari iOS ?	Samsung Internet Android Full support 6.0

Legend

Full support: Full support
No support: No support
Compatibility unknown: Compatibility unknown
Experimental. Expect behavior to change in the future.: Experimental. Expect behavior to change in the future.
See implementation notes.: See implementation notes.
User must explicitly enable this feature.: User must explicitly enable this feature.