BluetoothRemoteGATTDescriptor

这是 实验性技术
检查 浏览器兼容性表格 在生产中使用这之前。

BluetoothRemoteGATTDescriptor interface of the 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) .

Interface

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
Returns the currently cached descriptor value. This value gets updated when the value of the descriptor is read.

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 and returns a Promise .

规范

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

浏览器兼容性

更新 GitHub 上的兼容性数据
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BluetoothRemoteGATTDescriptor
Chrome 57
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57
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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
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Windows 10.
Edge ≤79
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≤79
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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
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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
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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

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见实现注意事项。
用户必须明确启用此特征。
用户必须明确启用此特征。