HIDInputReportEvent

Limited availability

This feature is not Baseline because it does not work in some of the most widely-used browsers.

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

Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

Note: This feature is available in Web Workers, except for Shared Web Workers.

The HIDInputReportEvent interface of the WebHID API is passed to inputreport event of HIDDevice when an input report is received from any associated HID device.

Event HIDInputReportEvent

Instance properties

This interface also inherits properties from Event.

HIDInputReportEvent.data Read only

A DataView containing the data from the input report, excluding the reportId if the HID interface uses report IDs.

HIDInputReportEvent.device Read only

The HIDDevice instance that represents the HID interface that sent the input report.

HIDInputReportEvent.reportId Read only

The one-byte identification prefix for this report, or 0 if the HID interface does not use report IDs.

Instance methods

This interface inherits methods from its parent, Event.

Examples

The following example demonstrates listening for an inputReport that will allow the application to detect which button is pressed on a Joy-Con Right device. You can see more examples, and live demos in the article Connecting to uncommon HID devices.

js
device.addEventListener("inputreport", (event) => {
  const { data, device, reportId } = event;

  // Handle only the Joy-Con Right device and a specific report ID.
  if (device.productId !== 0x2007 && reportId !== 0x3f) return;

  const value = data.getUint8(0);
  if (value === 0) return;

  const someButtons = { 1: "A", 2: "X", 4: "B", 8: "Y" };
  console.log(`User pressed button ${someButtons[value]}.`);
});

Specifications

Specification
WebHID API
# dom-hidinputreportevent

Browser compatibility

BCD tables only load in the browser