BluetoothRemoteGATTDescriptor

在此页

接口
特性
方法
规范
浏览器兼容性
相关话题

这是实验性技术
检查浏览器兼容性表格要小心谨慎在生产中使用这之前。

BluetoothRemoteGATTDescriptor 接口在 Web Bluetooth API provides a GATT Descriptor, which provides further information about a characteristic’s value.

This page describes the W3C Community Group Web Bluetooth API. For the Firefox OS Bluetooth API, see BluetoothGattDescriptor (Firefox OS) .

接口

interface BluetoothRemoteGATTDescriptor {
  readonly attribute BluetoothGATTCharacteristic characteristic;
  readonly attribute UUID uuid;
  readonly attribute ArrayBuffer? value;
  Promise<ArrayBuffer> readValue();
  Promise<void> writeValue(BufferSource value);
};

特性

BluetoothRemoteGATTDescriptor.characteristic 只读: 返回 BluetoothRemoteGATTCharacteristic this descriptor belongs to.
BluetoothRemoteGATTDescriptor.uuid 只读: Returns the UUID of the characteristic descriptor, for example ' 00002902-0000-1000-8000-00805f9b34fb ' for theClient Characteristic Configuration descriptor.
BluetoothRemoteGATTDescriptor.value 只读

方法

BluetoothRemoteGATTDescriptor.readValue(): 返回 Promise that resolves to an ArrayBuffer holding a duplicate of the value property if it is available and supported. Otherwise it throws an error.
BluetoothRemoteGATTDescriptor.writeValue(): Sets the value property to the bytes contained in an ArrayBuffer 并返回 Promise .

规范

规范	状态	注释
Web Bluetooth The definition of 'BluetoothRemoteGATTDescriptor' in that specification.	草案	初始定义。

浏览器兼容性

The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. 更新 GitHub 上的兼容性数据

	桌面						移动
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`BluetoothRemoteGATTDescriptor`	Chrome 57 注意事项 57 注意事项 macOS only. 57 注意事项 Disabled Linux and versions of Windows earlier than 10. Disabled From version 57: 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. 70 注意事项 Windows 10.	Edge ≤79 注意事项 ≤79 注意事项 macOS only. ≤79 注意事项 Disabled Linux and versions of Windows earlier than 10. Disabled From version ≤79: this feature is behind the `#enable-experimental-web-platform-features` preference (needs to be set to `enabled` ). ≤79 注意事项 Windows 10.	Firefox 不支持 No	IE 不支持 No	Opera 44 注意事项 44 注意事项 macOS only. 44 注意事项 Disabled Linux and versions of Windows earlier than 10. Disabled From version 44: this feature is behind the `#enable-experimental-web-platform-features` preference (needs to be set to `enabled` ). 57 注意事项 Windows 10.	Safari 不支持 No	WebView Android 不支持 No	Chrome Android 57	Firefox Android 不支持 No	Opera Android 44	Safari iOS 不支持 No	Samsung Internet Android 7.0
`characteristic`	Chrome 57 注意事项 57 注意事项 macOS only. 57 注意事项 Disabled Linux and versions of Windows earlier than 10. Disabled From version 57: 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. 70 注意事项 Windows 10.	Edge ≤79 注意事项 ≤79 注意事项 macOS only. ≤79 注意事项 Disabled Linux and versions of Windows earlier than 10. Disabled From version ≤79: this feature is behind the `#enable-experimental-web-platform-features` preference (needs to be set to `enabled` ). ≤79 注意事项 Windows 10.	Firefox 不支持 No	IE 不支持 No	Opera 44 注意事项 44 注意事项 macOS only. 44 注意事项 Disabled Linux and versions of Windows earlier than 10. Disabled From version 44: this feature is behind the `#enable-experimental-web-platform-features` preference (needs to be set to `enabled` ). 57 注意事项 Windows 10.	Safari 不支持 No	WebView Android 不支持 No	Chrome Android 57	Firefox Android 不支持 No	Opera Android 44	Safari iOS 不支持 No	Samsung Internet Android 7.0
`readValue`	Chrome 57 注意事项 57 注意事项 macOS only. 57 注意事项 Disabled Linux and versions of Windows earlier than 10. Disabled From version 57: 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. 70 注意事项 Windows 10.	Edge ≤79 注意事项 ≤79 注意事项 macOS only. ≤79 注意事项 Disabled Linux and versions of Windows earlier than 10. Disabled From version ≤79: this feature is behind the `#enable-experimental-web-platform-features` preference (needs to be set to `enabled` ). ≤79 注意事项 Windows 10.	Firefox 不支持 No	IE 不支持 No	Opera 44 注意事项 44 注意事项 macOS only. 44 注意事项 Disabled Linux and versions of Windows earlier than 10. Disabled From version 44: this feature is behind the `#enable-experimental-web-platform-features` preference (needs to be set to `enabled` ). 57 注意事项 Windows 10.	Safari 不支持 No	WebView Android 不支持 No	Chrome Android 57	Firefox Android 不支持 No	Opera Android 44	Safari iOS 不支持 No	Samsung Internet Android 7.0
`uuid`	Chrome 57 注意事项 57 注意事项 macOS only. 57 注意事项 Disabled Linux and versions of Windows earlier than 10. Disabled From version 57: 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. 70 注意事项 Windows 10.	Edge ≤79 注意事项 ≤79 注意事项 macOS only. ≤79 注意事项 Disabled Linux and versions of Windows earlier than 10. Disabled From version ≤79: this feature is behind the `#enable-experimental-web-platform-features` preference (needs to be set to `enabled` ). ≤79 注意事项 Windows 10.	Firefox 不支持 No	IE 不支持 No	Opera 44 注意事项 44 注意事项 macOS only. 44 注意事项 Disabled Linux and versions of Windows earlier than 10. Disabled From version 44: this feature is behind the `#enable-experimental-web-platform-features` preference (needs to be set to `enabled` ). 57 注意事项 Windows 10.	Safari 不支持 No	WebView Android 不支持 No	Chrome Android 57	Firefox Android 不支持 No	Opera Android 44	Safari iOS 不支持 No	Samsung Internet Android 7.0
`value`	Chrome 57 注意事项 57 注意事项 macOS only. 57 注意事项 Disabled Linux and versions of Windows earlier than 10. Disabled From version 57: 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. 70 注意事项 Windows 10.	Edge ≤79 注意事项 ≤79 注意事项 macOS only. ≤79 注意事项 Disabled Linux and versions of Windows earlier than 10. Disabled From version ≤79: this feature is behind the `#enable-experimental-web-platform-features` preference (needs to be set to `enabled` ). ≤79 注意事项 Windows 10.	Firefox 不支持 No	IE 不支持 No	Opera 44 注意事项 44 注意事项 macOS only. 44 注意事项 Disabled Linux and versions of Windows earlier than 10. Disabled From version 44: this feature is behind the `#enable-experimental-web-platform-features` preference (needs to be set to `enabled` ). 57 注意事项 Windows 10.	Safari 不支持 No	WebView Android 不支持 No	Chrome Android 57	Firefox Android 不支持 No	Opera Android 44	Safari iOS 不支持 No	Samsung Internet Android 7.0
`writeValue`	Chrome 57 注意事项 57 注意事项 macOS only. 57 注意事项 Disabled Linux and versions of Windows earlier than 10. Disabled From version 57: 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. 70 注意事项 Windows 10.	Edge ≤79 注意事项 ≤79 注意事项 macOS only. ≤79 注意事项 Disabled Linux and versions of Windows earlier than 10. Disabled From version ≤79: this feature is behind the `#enable-experimental-web-platform-features` preference (needs to be set to `enabled` ). ≤79 注意事项 Windows 10.	Firefox 不支持 No	IE 不支持 No	Opera 44 注意事项 44 注意事项 macOS only. 44 注意事项 Disabled Linux and versions of Windows earlier than 10. Disabled From version 44: this feature is behind the `#enable-experimental-web-platform-features` preference (needs to be set to `enabled` ). 57 注意事项 Windows 10.	Safari 不支持 No	WebView Android 不支持 No	Chrome Android 57	Firefox Android 不支持 No	Opera Android 44	Safari iOS 不支持 No	Samsung Internet Android 7.0

图例

完整支持
不支持
实验。期望将来行为有所改变。

用户必须明确启用此特征。

元数据

最后修改： 2019 年 3 月 23 日

在此页

接口

特性

方法

规范

浏览器兼容性

图例

相关话题