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.
js
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 | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
index |
21 | 12 | 29 | No | 15 | 10.1 | 4.4 | 25 | 32 | 14 | 10.3 | 1.5 |
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https://developer.mozilla.org/en-US/docs/Web/API/Gamepad/index