diff --git a/resources/js/ext.uls.compactlinks.js b/resources/js/ext.uls.compactlinks.js
index 20f02d00..952da1d1 100644
--- a/resources/js/ext.uls.compactlinks.js
+++ b/resources/js/ext.uls.compactlinks.js
@@ -210,14 +210,12 @@
 	 * @param {jQuery} $trigger Element to use as trigger.
 	 */
 	CompactInterlanguageList.prototype.createSelector = function ( $trigger ) {
-		var languages,
+		var languages = Object.keys( this.interlanguageList ),
 			self = this,
 			ulsLanguageList = {};
 
-		languages = $.map( this.interlanguageList, function ( language, languageCode ) {
-			ulsLanguageList[ languageCode ] = language.autonym;
-
-			return languageCode;
+		languages.forEach( function ( languageCode ) {
+			ulsLanguageList[ languageCode ] = this.interlanguageList[ languageCode ].autonym;
 		} );
 
 		// Attach ULS to the trigger
@@ -329,9 +327,7 @@
 		var language, languages, compactLanguages, i,
 			compactedList = {};
 
-		languages = $.map( this.interlanguageList, function ( item, languageCode ) {
-			return languageCode;
-		} );
+		languages = Object.keys( this.interlanguageList );
 
 		compactLanguages = this.compact( languages );
 
diff --git a/resources/js/ext.uls.displaysettings.js b/resources/js/ext.uls.displaysettings.js
index 557c4773..55678b4d 100644
--- a/resources/js/ext.uls.displaysettings.js
+++ b/resources/js/ext.uls.displaysettings.js
@@ -456,7 +456,7 @@
 
 			// Get the saved font using the fontSelector defined in mw.webfonts.setup
 			savedFont = this.$webfonts.getFont( language );
-			$.each( fonts, function ( key, font ) {
+			fonts.forEach( function ( font ) {
 				var $fontOption;
 
 				if ( font !== 'system' ) {
diff --git a/resources/js/ext.uls.languagesettings.js b/resources/js/ext.uls.languagesettings.js
index 6fd18cf0..40101d18 100644
--- a/resources/js/ext.uls.languagesettings.js
+++ b/resources/js/ext.uls.languagesettings.js
@@ -105,18 +105,14 @@
 
 			// Get the name of all registered modules and list them in left side menu.
 			// Sort the modules based on id
-			modules = $.map( $.fn.languagesettings.modules, function ( element, index ) {
-				return index;
-			} ).sort();
-			$.each( modules, function ( index, moduleName ) {
-				if ( $.fn.languagesettings.modules.hasOwnProperty( moduleName ) ) {
-					if ( !defaultModule ) {
-						defaultModule = moduleName;
-					}
-
-					// Call render function on the current setting module.
-					languageSettings.initModule( moduleName, defaultModule === moduleName );
+			modules = Object.keys( $.fn.languagesettings.modules ).sort();
+			modules.forEach( function ( moduleName ) {
+				if ( !defaultModule ) {
+					defaultModule = moduleName;
 				}
+
+				// Call render function on the current setting module.
+				languageSettings.initModule( moduleName, defaultModule === moduleName );
 			} );
 		},
 
diff --git a/tests/webfonts.html b/tests/webfonts.html
index 0a756453..fbee034d 100644
--- a/tests/webfonts.html
+++ b/tests/webfonts.html
@@ -40,9 +40,9 @@
 			$langselector = $( 'select#language' );
 
 			function listFonts( fonts ) {
-				$.merge( fonts, [ 'Sans', 'Serif' ] );
+				fonts.push( 'Sans', 'Serif' );
 				$fontSelector.find( 'option' ).remove();
-				$.each( fonts, function ( key, font ) {
+				fonts.forEach( function ( font ) {
 					$fontSelector.append( $( "<option></option>" )
 						.attr( "value", font ).text( font ) );
 				} );
@@ -50,7 +50,7 @@
 			}
 
 			listFonts( fonts );
-			$.each( languages, function ( lang, language ) {
+			languages.forEach( function ( language ) {
 				$langselector.append( $( "<option></option>" )
 					.attr( 'value', language )
 					.text( language + " - " + $.uls.data.getAutonym( language ) ) );