You can use window.devicePixelRatio in Webkit based browsers to get the device pixel ratio directly in JavaScript. I have used this on Google Chrome, Android browsers (2.2+) and Mobile Safari. I have no idea about other browsers though.
You can use window.devicePixelRatio in Webkit based browsers to get the device pixel ratio directly in JavaScript. I have used this on Google Chrome, Android browsers (2.2+) and Mobile Safari. I have no idea about other browsers though.