GamepadButton.value

The GamepadButton.value property of the GamepadButton interface returns a double value used to represent the current state of analog buttons on many modern gamepads, such as the triggers.

The values are normalized to the range 0.0 ā€” 1.0, with 0.0 representing a button that is not pressed, and 1.0 representing a button that is fully pressed.

Syntax

    readonly    attribute double  value;

Example

var gp = navigator.getGamepads()[0];

if(gp.buttons[0].value > 0) {
  // respond to analog button being pressed in
} 

Value

A double.

Specifications

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

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
valueChrome Full support 35
Full support 35
No support 21Ā ā€” 34
Prefixed
Prefixed Implemented with the vendor prefix: webkit
Edge Full support 12Firefox Full support 29
Full support 29
No support 24Ā ā€” 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 NoOpera Full support 22
Full support 22
No support 15Ā ā€” 21
Prefixed
Prefixed Implemented with the vendor prefix: webkit
Safari Full support 10.1WebView Android No support NoChrome Android Full support YesFirefox Android Full support 32Opera Android Full support 22
Full support 22
No support 14Ā ā€” 21
Prefixed
Prefixed Implemented with the vendor prefix: webkit
Safari iOS Full support 10.3Samsung Internet Android Full support Yes

Legend

Full support Ā 
Full support
No support Ā 
No support
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.

See also

Using the Gamepad API