3 ms·

This is the same approach used by Apple. If you go on apple.com and you run: AC.Retina._devicePixelRatio = 2 new AC.Retina you will see several requests s

by program 14y ago

This is the same approach used by Apple. If you go on apple.com and you run: AC.Retina._devicePixelRatio = 2 new AC.Retina you will see several requests such as: HEAD http://www.apple.com/home/images/ipad_title_2x.png