Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The transferIn() method of the USBDevice interface returns a promise that resolves with a USBInTransferResult when bulk or interrupt data is received from the USB device.
js
transferIn(endpointNumber, length)
endpointNumber
The number of a device-specific endpoint (buffer).
length
The maximum number of bytes that will be read back from the device. The actual data is in the USBInTransferResult in the resolved Promise.
A promise that resolves with a USBInTransferResult.
| Specification |
|---|
| WebUSB API # ref-for-dom-usbdevice-transferin① |
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
transferIn |
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/USBDevice/transferIn