diff --git a/src/wp-admin/js/password-strength-meter.js b/src/wp-admin/js/password-strength-meter.js
index 9ddee476bd..a075c269f8 100644
--- a/src/wp-admin/js/password-strength-meter.js
+++ b/src/wp-admin/js/password-strength-meter.js
@@ -1,3 +1,4 @@
+/* global zxcvbn */
 window.wp = window.wp || {};
 
 var passwordStrength;
@@ -40,7 +41,7 @@ var passwordStrength;
 			for ( i = 0; i < userInputFieldsLength; i++ ) {
 				currentField = $( '#' + userInputFields[ i ] );
 
-				if ( 0 == currentField.length ) {
+				if ( 0 === currentField.length ) {
 					continue;
 				}
 
@@ -58,7 +59,7 @@ var passwordStrength;
 
 			// Remove empty values, short words, and duplicates. Short words are likely to cause many false positives.
 			blacklist = $.grep( blacklist, function( value, key ) {
-				if ( '' == value || 4 > value.length ) {
+				if ( '' === value || 4 > value.length ) {
 					return false;
 				}
 
@@ -67,7 +68,7 @@ var passwordStrength;
 
 			return blacklist;
 		}
-	}
+	};
 
 	// Backwards compatibility.
 	passwordStrength = wp.passwordStrength.meter;
diff --git a/src/wp-admin/js/plugin-install.js b/src/wp-admin/js/plugin-install.js
index a8d44673d9..0a3167a2d0 100644
--- a/src/wp-admin/js/plugin-install.js
+++ b/src/wp-admin/js/plugin-install.js
@@ -1,3 +1,5 @@
+/* global plugininstallL10n, tb_click, confirm */
+
 /* Plugin Browser Thickbox related JS*/
 var tb_position;
 jQuery(document).ready(function($) {
@@ -13,7 +15,7 @@ jQuery(document).ready(function($) {
 			tbWindow.css({'margin-left': '-' + parseInt((( W - 50 ) / 2),10) + 'px'});
 			if ( typeof document.body.style.maxWidth != 'undefined' )
 				tbWindow.css({'top': 20 + adminbar_height + 'px','margin-top':'0'});
-		};
+		}
 
 		return $('a.thickbox').each( function() {
 			var href = $(this).attr('href');
diff --git a/src/wp-admin/js/set-post-thumbnail.js b/src/wp-admin/js/set-post-thumbnail.js
index e6ac87542c..68abbcc830 100644
--- a/src/wp-admin/js/set-post-thumbnail.js
+++ b/src/wp-admin/js/set-post-thumbnail.js
@@ -1,9 +1,12 @@
-function WPSetAsThumbnail(id, nonce){
+/* global setPostThumbnailL10n, ajaxurl, post_id, alert */
+/* exported WPSetAsThumbnail */
+
+function WPSetAsThumbnail( id, nonce ) {
 	var $link = jQuery('a#wp-post-thumbnail-' + id);
 
 	$link.text( setPostThumbnailL10n.saving );
 	jQuery.post(ajaxurl, {
-		action:"set-post-thumbnail", post_id: post_id, thumbnail_id: id, _ajax_nonce: nonce, cookie: encodeURIComponent(document.cookie)
+		action: 'set-post-thumbnail', post_id: post_id, thumbnail_id: id, _ajax_nonce: nonce, cookie: encodeURIComponent( document.cookie )
 	}, function(str){
 		var win = window.dialogArguments || opener || parent || top;
 		$link.text( setPostThumbnailL10n.setThumbnail );