Aspect Ratio Helpers

aspect.js

// assumes jQuery or applicable DOM library

function getAspectByEle(ele){
  var width  = ele.width();
  var height = ele.height();
  return getAspectByVal(width,height);
}

function getAspectByEleAttr(ele){
  var width  = ele.attr('width');
  var height = ele.attr('height');
  return getAspectByVal(width,height);
}

function getAspectByVal(width,height){
  return height/width;
}