USB
Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
Secure context: This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.
The USB interface of the WebUSB API provides attributes and methods for finding and connecting USB devices from a web page.
Properties
None.
Event handlers
USB.onconnect-
An event handler called whenever a previously paired device is connected.
USB.ondisconnect-
An event handler called whenever a paired device is disconnected.
Methods
USB.getDevices()-
Returns a
Promisethat resolves with an array ofUSBDeviceobjects for paired attached devices. USB.requestDevice()-
Returns a
Promisethat resolves with an instance ofUSBDeviceif the specified device is found. Calling this function triggers the user agent's pairing flow.
Specifications
| Specification |
|---|
| WebUSB API # usb |
Browser compatibility
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
USB |
61 |
79 |
No |
No |
48 |
No |
No |
61 |
No |
45 |
No |
8.0 |
getDevices |
61 |
79 |
No |
No |
48 |
No |
No |
61 |
No |
45 |
No |
8.0 |
onconnect |
61 |
79 |
No |
No |
48 |
No |
No |
61 |
No |
45 |
No |
8.0 |
ondisconnect |
61 |
79 |
No |
No |
48 |
No |
No |
61 |
No |
45 |
No |
8.0 |
requestDevice |
61 |
79 |
No |
No |
48 |
No |
No |
61 |
No |
45 |
No |
8.0 |
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https://developer.mozilla.org/en-US/docs/Web/API/USB