USBInterface

草案
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Secure context
This feature is available only in secure contexts (HTTPS), in some or all supporting browsers .

USBInterface interface of the WebUSB API provides information about an interface provided by the USB device. An interface represents a feature of the device which implements a particular protocol and may contain endpoints for bidirectional communication.

构造函数

USBInterface.USBInterface
创建新的 USBInterface object which will be populated with information about the interface on the provided USBConfiguration with the given interface number.

特性

USBInterface.interfaceNumber 只读
Returns the interface number of this interface. This is equal to the bInterfaceNumber field of the interface descriptor defining this interface.
USBInterface.alternate 只读
Returns the currently selected alternative configuration of this interface. By default this is the USBAlternateInterface from alternates with alternateSetting 等于 0 . It can be changed by calling USBDevice.selectAlternateInterface() with any other value found in alternates .
USBInterface.alternates 只读
Returns an array containing instances of the USBAlternateInterface interface describing each of the alternative configurations possible for this interface.
USBInterface.claimed 只读
Returns whether or not this interface has been claimed by the current page by calling USBDevice.claimInterface() .

规范

规范 状态 Comment
WebUSB
The definition of 'USBInterface' 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
Desktop Mobile
Chrome Edge Firefox Internet Explorer Opera Safari Android webview Chrome for Android Firefox for Android Opera for Android Safari on iOS Samsung Internet
USBInterface
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USBInterface() 构造函数
Chrome 61 Edge 79 Firefox No IE No Opera 48 Safari No WebView Android No Chrome Android 61 Firefox Android No Opera Android 45 Safari iOS No Samsung Internet Android 8.0
alternate
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alternates
Chrome 61 Edge 79 Firefox No IE No Opera 48 Safari No WebView Android No Chrome Android 61 Firefox Android No Opera Android 45 Safari iOS No Samsung Internet Android 8.0
claimed
Chrome 61 Edge 79 Firefox No IE No Opera 48 Safari No WebView Android No Chrome Android 61 Firefox Android No Opera Android 45 Safari iOS No Samsung Internet Android 8.0
interfaceNumber
Chrome 61 Edge 79 Firefox No IE No Opera 48 Safari No WebView Android No Chrome Android 61 Firefox Android No Opera Android 45 Safari iOS No Samsung Internet Android 8.0

图例

完整支持
完整支持
不支持
不支持
实验。期望将来行为有所改变。
实验。期望将来行为有所改变。
  1. USBInterface