Handle documents with no or empty <head> tags

Karsten Kraus · mislav · commit 245db60ca595 · 2017-05-20T19:22:37.000+02:00
Closes #625
diff --git a/jquery.pjax.js b/jquery.pjax.js
@@ -667,8 +667,9 @@ function extractContainer(data, xhr, options) {
 
   // Attempt to parse response html into elements
   if (fullDocument) {
-    var $head = $(parseHTML(data.match(/<head[^>]*>([\s\S.]*)<\/head>/i)[0]))
     var $body = $(parseHTML(data.match(/<body[^>]*>([\s\S.]*)<\/body>/i)[0]))
+    var head = data.match(/<head[^>]*>([\s\S.]*)<\/head>/i)
+    var $head = head != null ? $(parseHTML(head[0])) : $body
   } else {
     var $head = $body = $(parseHTML(data))
   }
