diff --git a/frontend-js/src/main/js/Functions.js b/frontend-js/src/main/js/Functions.js
index af62768bb7faee0ccdd809319a4d84062d93223d..a560d351c44a116758eab1f300527f0cd83bc8cc 100644
--- a/frontend-js/src/main/js/Functions.js
+++ b/frontend-js/src/main/js/Functions.js
@@ -259,32 +259,35 @@ Functions.createElement = function(params) {
 };
 
 function sqr(x) {
-  return x * x
+  return x * x;
 }
 
 function dist2(v, w) {
-  return sqr(v.x - w.x) + sqr(v.y - w.y)
+  return sqr(v.x - w.x) + sqr(v.y - w.y);
 }
 
 function distToSegmentSquared(p, v, w) {
   var l2 = dist2(v, w);
 
-  if (l2 == 0)
+  if (l2 === 0) {
     return dist2(p, v);
+  }
 
   var t = ((p.x - v.x) * (w.x - v.x) + (p.y - v.y) * (w.y - v.y)) / l2;
 
-  if (t < 0)
+  if (t < 0) {
     return dist2(p, v);
-  if (t > 1)
+  }
+  if (t > 1) {
     return dist2(p, w);
+  }
 
   return dist2(p, new google.maps.Point(v.x + t * (w.x - v.x), v.y + t * (w.y - v.y)));
 }
 Functions.distance = function(p1, el2) {
   if (el2 instanceof google.maps.Point) {
     var p2 = el2;
-    return Math.sqrt((Math.pow(p1.x - p2.x, 2)) + (Math.pow(p1.y - p2.y, 2)))
+    return Math.sqrt((Math.pow(p1.x - p2.x, 2)) + (Math.pow(p1.y - p2.y, 2)));
   } else {
     return Math.sqrt(distToSegmentSquared(p1, el2.start, el2.end));
   }
diff --git a/frontend-js/src/main/js/ServerConnector.js b/frontend-js/src/main/js/ServerConnector.js
index f49f246c52f0e1f327ff2a3798f2d3ceef92b2a6..3a27530f94ed6f0875b675f201299cde9439652d 100644
--- a/frontend-js/src/main/js/ServerConnector.js
+++ b/frontend-js/src/main/js/ServerConnector.js
@@ -897,7 +897,7 @@ ServerConnector.getLogoLink = function() {
 };
 
 ServerConnector.getMaxSearchDistance = function() {
-  return this.getConfigurationParam(ConfigurationType.SEARCH_DISTANCE)
+  return this.getConfigurationParam(ConfigurationType.SEARCH_DISTANCE);
 };
 
 ServerConnector.getOverlayById = function(layoutId, projectId) {
diff --git a/frontend-js/src/main/js/map/overlay/AbstractDbOverlay.js b/frontend-js/src/main/js/map/overlay/AbstractDbOverlay.js
index 8e53a66fb5572f4df11669994f26945100ff44b8..8ea6e8922f3e56253f49d8c995be22bb0861d999 100644
--- a/frontend-js/src/main/js/map/overlay/AbstractDbOverlay.js
+++ b/frontend-js/src/main/js/map/overlay/AbstractDbOverlay.js
@@ -54,7 +54,7 @@ AbstractDbOverlay.prototype.encodeQuery = function(type, arg0, arg1, arg2) {
       type : type,
       modelId : modelId,
       coordinates : coordinates,
-      zoom : arg2,
+      zoom : zoom,
     });
   } else if (type === AbstractDbOverlay.QueryType.SEARCH_BY_TARGET) {
     var target = arg0;
diff --git a/frontend-js/src/main/js/map/overlay/SearchDbOverlay.js b/frontend-js/src/main/js/map/overlay/SearchDbOverlay.js
index ed38cfb87670542da423d516d87f464c747ad5ef..7703aaf540e31d0f6e098d4f8ba9c94804b55c59 100644
--- a/frontend-js/src/main/js/map/overlay/SearchDbOverlay.js
+++ b/frontend-js/src/main/js/map/overlay/SearchDbOverlay.js
@@ -128,7 +128,7 @@ SearchDbOverlay.prototype.searchByCoordinates = function(params) {
     }).then(
         function(elements) {
           var nestedOverlay = "Pathways and compartments";
-          if (self.getMap().getOpenLayout().getName() == "Pathways and compartments") {
+          if (self.getMap().getOpenLayout().getName() === nestedOverlay) {
             return self._getFirstVisibleParentOrObject(elements[0], zoom
                 - self.getMap().getSubmodelById(modelId).getModel().getMinZoom());
           } else {
diff --git a/frontend-js/src/test/js/google-map-mock.js b/frontend-js/src/test/js/google-map-mock.js
index e342ac1f0baeabf67e4f3b3b996ca8406a24537c..e6a827a1c36bb718e4412cb07372d88258df7fe7 100644
--- a/frontend-js/src/test/js/google-map-mock.js
+++ b/frontend-js/src/test/js/google-map-mock.js
@@ -1,5 +1,7 @@
 "use strict";
 
+/* exported logger */
+
 var logger = require('./logger');
 
 var google = {
diff --git a/frontend-js/src/test/js/map/overlay/SearchDbOverlay-test.js b/frontend-js/src/test/js/map/overlay/SearchDbOverlay-test.js
index 376a9698ac938bfa338975d3438695cda84cd499..4d6a9c0c48b6387d653d01df4cd0e80d30f4fd35 100644
--- a/frontend-js/src/test/js/map/overlay/SearchDbOverlay-test.js
+++ b/frontend-js/src/test/js/map/overlay/SearchDbOverlay-test.js
@@ -4,7 +4,6 @@ var Helper = require('../../Helper');
 
 var logger = require('../../logger');
 
-var IdentifiedElement = require('../../../../main/js/map/data/IdentifiedElement');
 var SearchDbOverlay = require('../../../../main/js/map/overlay/SearchDbOverlay');
 
 var assert = require('assert');