Cross-browser @media (width) and @media (height) values

Cross-browser @media (width) and @media (height) values 

var w = Math.max(document.documentElement.clientWidth, window.innerWidth || 0);
var h = Math.max(document.documentElement.clientHeight, window.innerHeight || 0);

window.innerWidth and .innerHeight

  • gets CSS viewport @media (width) and @media (height) which include scrollbars
  • initial-scale and zoom variations may cause mobile values to wrongly scale down to what PPK calls the visual viewport and be smaller than the @media values
  • zoom may cause values to be 1px off due to native rounding
  • undefined in IE8-

document.documentElement.clientWidth and .clientHeight

  • equals CSS viewport width minus scrollbar width
  • matches @media (width) and @media (height) when there is no scrollbar
  • same as jQuery(window).width() which jQuery calls the browser viewport
  • available cross-browser