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UIEvent: sourceCapabilities property

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

The UIEvent.sourceCapabilities read-only property returns an instance of the InputDeviceCapabilities interface which provides information about the physical device responsible for generating a touch event. If no input device was responsible for the event, it returns null.

When a single user interaction with an input device generates a series of different input events, the sourceCapabilities property for all of them will point to the same instance of InputDeviceCapabilities. For example, when a user lifts their finger off of a touchscreen, several UIEvents may be generated including touchend, mousedown, click, and focus. All of these events must have the same sourceCapabilities representing the touchscreen.

A device is considered "responsible" for an event only when that interaction is part of the abstraction provided by the web platform. For example, many user agents allow a window to be resized with a mouse or a keyboard, but this detail is not exposed to the web platform in any way, and so the sourceCapabilities of a resize event will typically be null.

Value

An instance of InputDeviceCapabilities.

Specifications

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
sourceCapabilities 47 79 No No 34 No 47 47 No 34 No 5.0

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https://developer.mozilla.org/en-US/docs/Web/API/UIEvent/sourceCapabilities