Gamepad.axes

The Gamepad.axes property of the Gamepad interface returns an array representing the controls with axes present on the device (e.g. analog thumb sticks).

Each entry in the array is a floating point value in the range -1.0 – 1.0, representing the axis position from the lowest value (-1.0) to the highest value (1.0).

Value

An array of numbers.

Examples

function gameLoop() {
  const [gp] = navigator.getGamepads();

  let a = 0;
  let b = 0;
  if (gp.axes[0] !== 0) {
    b -= gp.axes[0];
  } else if (gp.axes[1] !== 0) {
    a += gp.axes[1];
  } else if (gp.axes[2] !== 0) {
    b += gp.axes[2];
  } else if (gp.axes[3] !== 0) {
    a -= gp.axes[3];
  }

  ball.style.left = `${a * 2}px`;
  ball.style.top = `${b * 2}px`;

  const start = requestAnimationFrame(gameLoop);
};

Specifications

Specification
Gamepad
# dom-gamepad-axes

Browser compatibility

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See also