Device resolution detection module
npm install ressh
npm install res --save
`
API
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- Get resolution in dpi
- @return number
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- Get resolution in dpcm
- @return number
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- Get resolution in dppx
- @return number
Usage
`js
var res = require('res')
res.dppx() // 1
res.dpi() // 96
res.dpcm() // 37.79527559055118
`
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- dppx equals devicePixelRatio
- dppx is the preferred resolution unit for web design
- User zoom affects resolution
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res was mainly written for investigative purposes. Making retina design accommodations can be impractical. Consider alternatives to resolution detection.
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Device
res.ddpx()
res.dpi()
res.dpcm()
desktop at default zoom
1
96
37.79527559055118
iPhone 4s at default zoom
2
192
75.59055118110236
Compatibility
#### Browsers with resolution detectable by res
- Webkit (Chrome/Safari/Android)
- Firefox 18+
- Opera 11.1+ (Presto 2.8+)
- IE 6+
Methods return 0` where undetectable.