code: function containsNonSimpleHeaders(headers) {
          var containsNonSimple = false;
  
          qq.each(containsNonSimple, function(idx, header) {
              if (qq.indexOf(["Accept", "Accept-Language", "Content-Language", "Content-Type"], header) < 0) {
                  containsNonSimple = true;
                  return false;
              }
          });
  
          return containsNonSimple;
      }
docs: [Simple headers](http://www.w3.org/TR/cors/#simple-header) are defined by the W3C in the CORS spec as a list of headers that, in part, make a CORS request eligible to be exempt from preflighting.