javascript - window.devicePixelRatio does not work in IE 10 Mobile?

Question

I am using window.devicePixelRatio which works on Andriod and Iphone but does not work in IE 10 Windows mobile. any alternative?

Answer 1

For a IE fallback, both desktop and mobile, use:

window.devicePixelRatio = window.devicePixelRatio || 
                          window.screen.deviceXDPI / window.screen.logicalXDPI;