This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The claimInterface()
method of the USBDevice
interface returns a promise
that resolves when the requested interface is claimed for exclusive access.
Syntax
var promise = USBDevice.claimInterface(interfaceNumber)
Parameters
- interfaceNumber
- The index of one of the interfaces supported by the device. Interfaces are device-specific.
Return value
A promise
.
Example
The following example shows claimInterface()
in the context of connecting to a USB device.
async function connectDevice(usbDevice) { await usbDevice.open(); if (usbDevice.configuration === null) await usbDevice.selectConfiguration(1); await usbDevice.claimInterface(0); }
Specifications
Specification | Status | Comment |
---|---|---|
WebUSB The definition of 'claimInterface()' in that specification. |
Draft | Initial definition. |
Browser compatibility
The compatibility table in 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 | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
claimInterface | Chrome Full support 61 | Edge Full support 79 | Firefox No support No | IE No support No | Opera Full support 48 | Safari No support No | WebView Android No support No | Chrome Android Full support 61 | Firefox Android No support No | Opera Android Full support 45 | Safari iOS No support No | Samsung Internet Android Full support 8.0 |
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.