getAvailability() returns a promise that resolves with true if the user agent is running on a system that has a Bluetooth radio and false otherwise. The powered state of the Bluetooth radio does not influence the availability because applications can prompt users to turn on the radio using requestDevice(). The availabilitychanged event can be used to detect changes in the availability of the Bluetooth radio.

Motivation

This API is useful for developers to know whether they should show UI for Web Bluetooth or not to the user.

Demos

• https://googlechrome.github.io/samples/web-bluetooth/availability.html
• https://googlechrome.github.io/samples/web-bluetooth/availability-async-await.html

Documentation

• https://chromium-review.googlesource.com/c/chromium/src/+/1651516

Specification

Editor's draft

Status in Chromium

Blink components: Blink>Bluetooth

Enabled by default (tracking bug) in:

• Chrome for desktop release 78
• Chrome for Android release 78

Consensus & Standardization

• Firefox: No signal
• Edge: No signal
• Safari: No signal
• Web Developers: No signals

Owner

• odejesush@chromium.org

Comments

Intent to Implement and Ship: https://groups.google.com/a/chromium.org/forum/?utm_medium=email&utm_source=footer#!msg/blink-dev/093IZbeZ6RA/nyWAWIOICwAJ

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Last updated on 2021-03-12