golf: use doc.head & doc.querySelector;

- 764 gz / 620 br
GoogleChromeLabs · Dec 11, 2018 · 53b7d15 · 53b7d15
1 parent 34e9718
commit 53b7d15
Showing 1 changed file with 1 addition and 4 deletions.
diff --git a/src/prefetch.mjs b/src/prefetch.mjs
@@ -57,10 +57,7 @@ function linkPrefetchStrategy(url) {
     link.onload = resolve;
     link.onerror = reject;
 
-    const parentElement =
-      document.getElementsByTagName(`head`)[0] ||
-      document.getElementsByName(`script`)[0].parentNode;
-    parentElement.appendChild(link);
+    (document.head || document.querySelector(`script`.parentNode)).appendChild(link);
   });
 };