From 984db6e81e6a894e613bf14b644b2a9a9a5b7818 Mon Sep 17 00:00:00 2001
From: Timo Tijhof <krinklemail@gmail.com>
Date: Wed, 13 Dec 2017 20:24:19 +0100
Subject: [PATCH] resourceloader: Use document.head instead of
 getElementsByTagName

Supported in all Grade A browsers. Also already being used
by jquery.js (without fallback), which we depend on.

Browser support (per MDN):
- Desktop: Chrome 4+, FF 4+, Edge, IE 9+, Opera 11+, Safari 5+
- Mobile: Android, Edge, FF Mobile 4+, IE Mobile 9+, Opera Mobile,
  Mobile Safari

(Those without numbers, have support since their initial release)

Change-Id: I2e9820de8463518a14a0d679d1f339c3a2f9dc66
---
 resources/src/mediawiki.legacy/wikibits.js | 4 ++--
 resources/src/mediawiki/mediawiki.js       | 2 +-
 resources/src/startup.js                   | 2 +-
 3 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/resources/src/mediawiki.legacy/wikibits.js b/resources/src/mediawiki.legacy/wikibits.js
index f5bdfd8058..27d049eb3a 100644
--- a/resources/src/mediawiki.legacy/wikibits.js
+++ b/resources/src/mediawiki.legacy/wikibits.js
@@ -49,7 +49,7 @@
 		loadedScripts[ url ] = true;
 		s = document.createElement( 'script' );
 		s.setAttribute( 'src', url );
-		document.getElementsByTagName( 'head' )[ 0 ].appendChild( s );
+		document.head.appendChild( s );
 		return s;
 	}
 
@@ -72,7 +72,7 @@
 		if ( media ) {
 			l.media = media;
 		}
-		document.getElementsByTagName( 'head' )[ 0 ].appendChild( l );
+		document.head.appendChild( l );
 		return l;
 	}
 
diff --git a/resources/src/mediawiki/mediawiki.js b/resources/src/mediawiki/mediawiki.js
index a661ae5521..592fc9e83e 100644
--- a/resources/src/mediawiki/mediawiki.js
+++ b/resources/src/mediawiki/mediawiki.js
@@ -902,7 +902,7 @@
 				if ( nextNode && nextNode.parentNode ) {
 					nextNode.parentNode.insertBefore( s, nextNode );
 				} else {
-					document.getElementsByTagName( 'head' )[ 0 ].appendChild( s );
+					document.head.appendChild( s );
 				}
 
 				return s;
diff --git a/resources/src/startup.js b/resources/src/startup.js
index b0c15781ee..8e8463d251 100644
--- a/resources/src/startup.js
+++ b/resources/src/startup.js
@@ -162,5 +162,5 @@ window.isCompatible = function ( str ) {
 		// Callback
 		startUp();
 	};
-	document.getElementsByTagName( 'head' )[ 0 ].appendChild( script );
+	document.head.appendChild( script );
 }() );
-- 
2.20.1