Number of style selectors on page

Number of style selectors on page.js

var
  styleSheets = document.styleSheets,
  totalStyleSheets = styleSheets.length, 
  totalRules = 0; 

for (var j = 0; j < totalStyleSheets; j++){
  var
    styleSheet = styleSheets[j],
    rules = styleSheet.cssRules,
    totalRulesInStylesheet = rules.length,
    totalSelectorsInStylesheet = 0;
  totalRules = totalRules + totalRulesInStylesheet;
  for (var i = 0; i < totalRulesInStylesheet; i++) {
    if (rules[i].selectorText){
      totalSelectorsInStylesheet += rules[i].selectorText.split(',').length;
    }
  } 
} 
console.log("Total rules: " + totalRules);

IE8 has limitation for number of style selectors per file (4096).