Draft
This page is not complete.
Secure context
This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.
This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The BluetoothCharacteristicProperties
interface of the the Web Bluetooth API provides the operations that are valid on the given BluetoothRemoteGATTCharacteristic
. This interface is returned by calling BluetoothRemoteGATTCharacteristic.properties
.
Properties
authenticatedSignedWrites
Read only- Returns a
boolean
that istrue
if signed writing to the characteristic value is permitted. broadcast
Read only- Returns a
boolean
that istrue
if the broadcast of the characteristic value is permitted using the Server Characteristic Configuration Descriptor. indicate
Read only- Returns a
boolean
that istrue
if indications of the characteristic value with acknowledgement is permitted. notify
Read only- Returns a
boolean
that istrue
if notifications of the characteristic value without acknowledgement is permitted. read
Read only- Returns a
boolean
that istrue
if the reading of the characteristic value is permitted. reliableWrite
Read only- Returns a
boolean
that istrue
if reliable writes to the characteristic is permitted. writableAuxiliaries
Read only- Returns a
boolean
that istrue
if reliable writes to the characteristic descriptor is permitted. write
Read only- Returns a
boolean
that istrue
if the writing to the characteristic with response is permitted. writeWithoutResponse
Read only- Returns a
boolean
that istrue
if the writing to the characteristic without response is permitted.
Examples
The following example shows how tell if a GATT characteristic supports value change notifications.
let device = await navigator.bluetooth.requestDevice({ filters: [{services: ['heart_rate']}] }); let gatt = await device.gatt.connect(); let service = await gatt.getPrimaryService('heart_rate'); let characteristic = await service.getCharacteristic('heart_rate_measurement'); if (characteristic.properties.notify) { characteristics.addEventListener('characteristicvaluechanged', function(event) { console.log(`Received heart rate measurement: ${event.target.value}`); } await characteristic.startNotifications(); }
Specifications
Specification | Status | Comment |
---|---|---|
Web Bluetooth The definition of 'BluetoothCharacteristicProperties' in that specification. |
Draft | Initial definition. |
Browser Compatibility
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.
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
BluetoothCharacteristicProperties | Chrome
Full support
56
| Edge
Full support
≤79
| Firefox No support No | IE No support No | Opera Full support Yes | Safari No support No | WebView Android No support No | Chrome Android Full support 56 | Firefox Android No support No | Opera Android Full support Yes | Safari iOS No support No | Samsung Internet Android Full support 6.0 |
authenticatedSignedWrites | Chrome
Full support
56
| Edge
Full support
≤79
| Firefox No support No | IE No support No | Opera Full support Yes | Safari No support No | WebView Android No support No | Chrome Android Full support 56 | Firefox Android No support No | Opera Android Full support Yes | Safari iOS No support No | Samsung Internet Android Full support 6.0 |
broadcast | Chrome
Full support
56
| Edge
Full support
≤79
| Firefox No support No | IE No support No | Opera Full support Yes | Safari No support No | WebView Android No support No | Chrome Android Full support 56 | Firefox Android No support No | Opera Android Full support Yes | Safari iOS No support No | Samsung Internet Android Full support 6.0 |
indicate | Chrome
Full support
56
| Edge
Full support
≤79
| Firefox No support No | IE No support No | Opera Full support Yes | Safari No support No | WebView Android No support No | Chrome Android Full support 56 | Firefox Android No support No | Opera Android Full support Yes | Safari iOS No support No | Samsung Internet Android Full support 6.0 |
notify | Chrome
Full support
56
| Edge
Full support
≤79
| Firefox No support No | IE No support No | Opera Full support Yes | Safari No support No | WebView Android No support No | Chrome Android Full support 56 | Firefox Android No support No | Opera Android Full support Yes | Safari iOS No support No | Samsung Internet Android Full support 6.0 |
read | Chrome
Full support
56
| Edge
Full support
≤79
| Firefox No support No | IE No support No | Opera Full support Yes | Safari No support No | WebView Android No support No | Chrome Android Full support 56 | Firefox Android No support No | Opera Android Full support Yes | Safari iOS No support No | Samsung Internet Android Full support 6.0 |
reliableWrite | Chrome
Full support
56
| Edge
Full support
≤79
| Firefox No support No | IE No support No | Opera Full support Yes | Safari No support No | WebView Android No support No | Chrome Android Full support 56 | Firefox Android No support No | Opera Android Full support Yes | Safari iOS No support No | Samsung Internet Android Full support 6.0 |
writableAuxiliaries | Chrome
Full support
56
| Edge
Full support
≤79
| Firefox No support No | IE No support No | Opera Full support Yes | Safari No support No | WebView Android No support No | Chrome Android Full support 56 | Firefox Android No support No | Opera Android Full support Yes | Safari iOS No support No | Samsung Internet Android Full support 6.0 |
write | Chrome
Full support
56
| Edge
Full support
≤79
| Firefox No support No | IE No support No | Opera Full support Yes | Safari No support No | WebView Android No support No | Chrome Android Full support 56 | Firefox Android No support No | Opera Android Full support Yes | Safari iOS No support No | Samsung Internet Android Full support 6.0 |
writeWithoutResponse | Chrome
Full support
56
| Edge
Full support
≤79
| Firefox No support No | IE No support No | Opera Full support Yes | Safari No support No | WebView Android No support No | Chrome Android Full support 56 | Firefox Android No support No | Opera Android Full support Yes | Safari iOS No support No | Samsung Internet Android Full support 6.0 |
Legend
- Full support
- Full support
- No support
- No support
- 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.