Gamepad.index

The Gamepad.index property of the Gamepad interface returns an integer that is auto-incremented to be unique for each device currently connected to the system.

This can be used to distinguish multiple controllers; a gamepad that is disconnected and reconnected will retain the same index.

Syntax

readonly    attribute long                index;

Example

window.addEventListener("gamepadconnected", function() {
  var gp = navigator.getGamepads()[0];
  gamepadInfo.innerHTML = "Gamepad connected at index " + gp.index + ": " + gp.id + ".";
});

Value

A number.

Specifications

Specification	Status	Comment
Gamepad The definition of 'Gamepad.index' in that specification.	Working Draft	Initial definition

Browser compatibility

Update compatibility data on GitHub

	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
`index` Experimental	Chrome Full support 35 Full support 35 No support 21 — 34 Prefixed Prefixed Implemented with the vendor prefix: webkit	Edge Full support 12	Firefox Full support 29 Full support 29 No support 24 — 28 Disabled Disabled From version 24 until version 28 (exclusive): this feature is behind the `dom.gamepad.enabled` preference (needs to be set to `true`). To change preferences in Firefox, visit about:config.	IE No support No	Opera Full support 22 Full support 22 No support 15 — 21 Prefixed Prefixed Implemented with the vendor prefix: webkit	Safari Full support 10.1	WebView Android No support No	Chrome Android Full support 35 Full support 35 No support 25 — 34 Prefixed Prefixed Implemented with the vendor prefix: webkit	Firefox Android Full support 32	Opera Android Full support 22 Full support 22 No support 14 — 21 Prefixed Prefixed Implemented with the vendor prefix: webkit	Safari iOS Full support 10.3	Samsung Internet Android Full support 4.0 Full support 4.0 No support 2.0 — 3.0 Prefixed Prefixed Implemented with the vendor prefix: webkit

Legend

Full support: Full support
No support: No support
Experimental. Expect behavior to change in the future.: Experimental. Expect behavior to change in the future.
User must explicitly enable this feature.: User must explicitly enable this feature.
Requires a vendor prefix or different name for use.: Requires a vendor prefix or different name for use.