(FB Instant games) How I can get/set screen resolution?

问题

How can I get/set screen resolution for instant games in mobile facebook app or mesenger? I tried getting that by "window.screen.width" and "window.innerWidth", it returned me 360 pixels (but i have 980 in Chrome browser). I haven’t used any meta tags which can limit the resolution.

回答1:

You need to use window.innerWidth and window.innerHeight.

You need to multiply these by window.devicePixelRatio.

So:

PixelW = window.innerWidth *  window.devicePixelRatio;
PixelH = window.innerHeight *  window.devicePixelRatio;

来源：https://stackoverflow.com/questions/49034665/fb-instant-games-how-i-can-get-set-screen-resolution