npm install
npm run serve
npm run build
npm run test
npm run lint
git pull origin master --allow-unrelated-histories
- mac小屏 2880 1440(window.screen.width) 0.7
- mac大屏 2560 2560(window.screen.width) 1
- window 1920 2560(window.screen.width) 1.1
import DevicePixelRatio from './devicePixelRatio';