GamepadHapticActuator: playEffect() method

The playEffect() method of the GamepadHapticActuator interface causes the hardware to play a specific vibration effect.

Syntax

playEffect(type, params)

Parameters

type

A string representing the desired effect. Possible values are "dual-rumble" and "trigger-rumble", and their effects can vary depending on the hardware type. See GamepadHapticActuator.effects for further details of the effect types.

params

An object to describe a desired haptic effect.

Expected values are:

duration Optional: The duration of the effect in milliseconds. Defaults to 0.
startDelay Optional: The delay in milliseconds before the effect is started. Defaults to 0.
strongMagnitude Optional: The rumble intensity of the low-frequency (strong) rumble motors, normalized to the range between 0.0 and 1.0. Defaults to 0.0.
weakMagnitude Optional: The rumble intensity of the high-frequency (weak) rumble motors, normalized to the range between 0.0 and 1.0. Defaults to 0.0.
leftTrigger (relevant to "trigger-rumble" effects only) Optional: The rumble intensity of the bottom-left front trigger, normalized to the range between 0.0 and 1.0. Defaults to 0.0.
rightTrigger (relevant to "trigger-rumble" effects only) Optional: The rumble intensity of the bottom-right front trigger, normalized to the range between 0.0 and 1.0. Defaults to 0.0.

Note: A new call to playEffect() overrides a previous ongoing call.

Return value

A promise that resolves with "complete" when the effect successfully completes, or "preempted" if the current effect is stopped or replaced by another effect.

The promise may reject with the following exception types:

InvalidStateError DOMException: The current document is not active or hidden.
NotSupportedError DOMException: The requested type is not supported by the current gamepad's actuator.
TypeError DOMException: The requested type is not a valid effect type.

Examples

const gamepad = navigator.getGamepads()[0];

gamepad.vibrationActuator
  .playEffect("dual-rumble", {
    startDelay: 0,
    duration: 200,
    weakMagnitude: 1.0,
    strongMagnitude: 1.0,
  })
  .then((result) => console.log(result));
// Should log "complete" if effect successfully runs

Specifications

Gamepad