This feature is well established and works across many devices and browser versions. It’s been available across browsers since March 2017.
Secure context: This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.
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.
A number.
window.addEventListener("gamepadconnected", () => {
const gp = navigator.getGamepads()[0];
gamepadInfo.textContent = `Gamepad connected at index ${gp.index}: ${gp.id}.`;
});
| Specification |
|---|
| Gamepad> # dom-gamepad-index> |
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Opera | Safari | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | WebView Android | WebView on iOS | |
index |
21 | 12 | 29 | 15 | 10.1 | 25 | 32 | 14 | 10.3 | 1.5 | 4.4 | 10.3 |
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https://developer.mozilla.org/en-US/docs/Web/API/Gamepad/index