Bug fixes

lib/eval-script.js

@@ -31,7 +31,7 @@ module.exports = function(el) {
   // execute
   parent.appendChild(script)
   // avoid pollution only in head or body tags
-  if (["head", "body"].indexOf(parent.tagName.toLowerCase()) > 0) {
+  if (parent instanceof HTMLHeadElement || parent instanceof HTMLBodyElement) {
     parent.removeChild(script)
   }