dpi

get current device dpi

HTML

<script src="https://getfirebug.com/firebug-lite.js"></script>

SCSS

#dpi {
  height: 1in;
  left: -100%;
  position: absolute;
  top: -100%;
  width: 1in;
}

CoffeeScript

dpi= ->
  e = document.createElement 'div'
  e.setAttribute 'id', 'dpi'
  document.body.appendChild e
  dpi = document.getElementById('dpi').offsetHeight
  e.parentNode.removeChild e
  alert dpi
    
dpi()