docs: function (mixedVar) {
  
              var emptyValues = [undefined, null, false, 0, "", "0"],
                  i, length;
  
              for (i = 0, length = emptyValues.length; i < length; i++) {
                  if (mixedVar === emptyValues[i]) {
                      return true;
                  }
              }
  
              if (typeof mixedVar === "object") {
                  if ($this.count(mixedVar) === 0) {
                      return true;
                  }
              }
  
              return false;
          }