diff --git a/src/node/db/API.js b/src/node/db/API.js
index a2c0d60b7..b6acefcd4 100644
--- a/src/node/db/API.js
+++ b/src/node/db/API.js
@@ -192,7 +192,7 @@ Example returns:
 exports.getText = function(padID, rev, callback)
 {
   // check if rev is a number
-  if (rev !== undefined && typeof rev != "number") {
+  if (rev !== undefined && typeof rev !== "number") {
     // try to parse the number
     if (isNaN(parseInt(rev))) {
       callback(new customError("rev is not a number", "apierror"));
@@ -256,7 +256,7 @@ Example returns:
 exports.setText = function(padID, text, callback)
 {
   // text is required
-  if (typeof text != "string") {
+  if (typeof text !== "string") {
     callback(new customError("text is not a string", "apierror"));
     return;
   }
@@ -285,7 +285,7 @@ Example returns:
 exports.appendText = function(padID, text, callback)
 {
   // text is required
-  if (typeof text != "string") {
+  if (typeof text !== "string") {
     callback(new customError("text is not a string", "apierror"));
     return;
   }
@@ -311,7 +311,7 @@ Example returns:
 */
 exports.getHTML = function(padID, rev, callback)
 {
-  if (rev !== undefined && typeof rev != "number") {
+  if (rev !== undefined && typeof rev !== "number") {
     if (isNaN(parseInt(rev))) {
       callback(new customError("rev is not a number", "apierror"));
       return;
@@ -375,7 +375,7 @@ Example returns:
 exports.setHTML = function(padID, html, callback)
 {
   // html is required
-  if (typeof html != "string") {
+  if (typeof html !== "string") {
     callback(new customError("html is not a string", "apierror"));
     return;
   }
@@ -471,7 +471,7 @@ Example returns:
 exports.appendChatMessage = function(padID, text, authorID, time, callback)
 {
   // text is required
-  if (typeof text != "string") {
+  if (typeof text !== "string") {
     callback(new customError("text is not a string", "apierror"));
     return;
   }
@@ -557,7 +557,7 @@ Example returns:
 exports.saveRevision = function(padID, rev, callback)
 {
   // check if rev is a number
-  if (rev !== undefined && typeof rev != "number") {
+  if (rev !== undefined && typeof rev !== "number") {
     // try to parse the number
     if (isNaN(parseInt(rev))) {
       callback(new customError("rev is not a number", "apierror"));
@@ -636,7 +636,7 @@ exports.createPad = function(padID, text, callback)
 {
   if (padID) {
     // ensure there is no $ in the padID
-    if (padID.indexOf("$") != -1) {
+    if (padID.indexOf("$") !== -1) {
       callback(new customError("createPad can't create group pads", "apierror"));
       return;
     }
@@ -682,7 +682,7 @@ exports.deletePad = function(padID, callback)
 exports.restoreRevision = function(padID, rev, callback)
 {
   // check if rev is a number
-  if (rev !== undefined && typeof rev != "number") {
+  if (rev !== undefined && typeof rev !== "number") {
     // try to parse the number
     if (isNaN(parseInt(rev))) {
       callback(new customError("rev is not a number", "apierror"));
@@ -838,7 +838,7 @@ exports.getPadID = function(roID, callback)
   readOnlyManager.getPadId(roID, function(err, retrievedPadID) {
     if (ERR(err, callback)) return;
 
-    if (retrievedPadID == null) {
+    if (retrievedPadID === null) {
       callback(new customError("padID does not exist", "apierror"));
       return;
     }
@@ -858,7 +858,7 @@ Example returns:
 exports.setPublicStatus = function(padID, publicStatus, callback)
 {
   // ensure this is a group pad
-  if (padID && padID.indexOf("$") == -1) {
+  if (padID && padID.indexOf("$") === -1) {
     callback(new customError("You can only get/set the publicStatus of pads that belong to a group", "apierror"));
     return;
   }
@@ -868,7 +868,7 @@ exports.setPublicStatus = function(padID, publicStatus, callback)
     if (ERR(err, callback)) return;
 
     // convert string to boolean
-    if (typeof publicStatus == "string")
+    if (typeof publicStatus === "string")
       publicStatus = publicStatus == "true" ? true : false;
 
     // set the password
@@ -1045,7 +1045,7 @@ Example returns:
 */
 exports.createDiffHTML = function(padID, startRev, endRev, callback) {
   // check if startRev is a number
-  if (startRev !== undefined && typeof startRev != "number") {
+  if (startRev !== undefined && typeof startRev !== "number") {
     // try to parse the number
     if (isNaN(parseInt(startRev))) {
       callback({stop: "startRev is not a number"});
@@ -1056,7 +1056,7 @@ exports.createDiffHTML = function(padID, startRev, endRev, callback) {
   }
 
   // check if endRev is a number
-  if (endRev !== undefined && typeof endRev != "number") {
+  if (endRev !== undefined && typeof endRev !== "number") {
     // try to parse the number
     if (isNaN(parseInt(endRev))) {
       callback({stop: "endRev is not a number"});
@@ -1119,13 +1119,13 @@ function is_int(value)
 // gets a pad safe
 function getPadSafe(padID, shouldExist, text, callback)
 {
-  if (typeof text == "function") {
+  if (typeof text === "function") {
     callback = text;
     text = null;
   }
 
   // check if padID is a string
-  if (typeof padID != "string") {
+  if (typeof padID !== "string") {
     callback(new customError("padID is not a string", "apierror"));
     return;
   }
diff --git a/src/node/db/AuthorManager.js b/src/node/db/AuthorManager.js
index 818eaab28..d04c4ca32 100644
--- a/src/node/db/AuthorManager.js
+++ b/src/node/db/AuthorManager.js
@@ -45,7 +45,7 @@ exports.doesAuthorExists = function(authorID, callback)
   db.get("globalAuthor:" + authorID, function(err, author) {
     if (ERR(err, callback)) return;
 
-    callback(null, author != null);
+    callback(null, author !== null);
   });
 }
 
@@ -98,7 +98,7 @@ function mapAuthorWithDBKey (mapperkey, mapper, callback)
   db.get(mapperkey + ":" + mapper, function(err, author) {
     if (ERR(err, callback)) return;
 
-    if (author == null) {
+    if (author === null) {
       // there is no author with this mapper, so create one
       exports.createAuthor(null, function(err, author) {
         if (ERR(err, callback)) return;
@@ -212,7 +212,7 @@ exports.listPadsOfAuthor = function(authorID, callback)
   db.get("globalAuthor:" + authorID, function(err, author) {
     if (ERR(err, callback)) return;
 
-    if (author == null) {
+    if (author === null) {
       // author does not exist
       callback(new customError("authorID does not exist", "apierror"));
 
@@ -242,7 +242,7 @@ exports.addPad = function(authorID, padID)
   // get the entry
   db.get("globalAuthor:" + authorID, function(err, author) {
     if (ERR(err)) return;
-    if (author == null) return;
+    if (author === null) return;
 
     if (author.padIDs == null) {
       // the entry doesn't exist so far, let's create it
@@ -266,9 +266,9 @@ exports.removePad = function(authorID, padID)
 {
   db.get("globalAuthor:" + authorID, function(err, author) {
     if (ERR(err)) return;
-    if (author == null) return;
+    if (author === null) return;
 
-    if (author.padIDs != null) {
+    if (author.padIDs !== null) {
       // remove pad from author
       delete author.padIDs[padID];
       db.set("globalAuthor:" + authorID, author);
diff --git a/src/node/db/GroupManager.js b/src/node/db/GroupManager.js
index f384f70aa..985883203 100644
--- a/src/node/db/GroupManager.js
+++ b/src/node/db/GroupManager.js
@@ -122,7 +122,7 @@ exports.deleteGroup = function(groupID, callback)
         if (ERR(err, callback)) return;
         groups = groups? groups.groupIDs : [];
 
-        if (groups.indexOf(groupID) == -1) {
+        if (groups.indexOf(groupID) === -1) {
           // it's not listed
           callback();
 
@@ -198,7 +198,7 @@ exports.createGroup = function(callback)
 exports.createGroupIfNotExistsFor = function(groupMapper, callback)
 {
   // ensure mapper is optional
-  if (typeof groupMapper != "string") {
+  if (typeof groupMapper !== "string") {
     callback(new customError("groupMapper is not a string", "apierror"));
     return;
   }
@@ -248,7 +248,7 @@ exports.createGroupPad = function(groupID, padName, text, callback)
       exports.doesGroupExist(groupID, function(err, exists) {
         if (ERR(err, callback)) return;
 
-        if (exists == false) {
+        if (!exists) {
           // group does not exist
           callback(new customError("groupID does not exist", "apierror"));
           return;
@@ -303,7 +303,7 @@ exports.listPads = function(groupID, callback)
     if (ERR(err, callback)) return;
 
     // ensure the group exists
-    if (exists == false) {
+    if (!exists) {
       callback(new customError("groupID does not exist", "apierror"));
       return;
     }
diff --git a/src/node/db/SecurityManager.js b/src/node/db/SecurityManager.js
index 117f2794f..bc8f59426 100644
--- a/src/node/db/SecurityManager.js
+++ b/src/node/db/SecurityManager.js
@@ -62,7 +62,7 @@ exports.checkAccess = function(padID, sessionCookie, token, password, callback)
     }
   } else {
     // a session is not required, so we'll check if it's a public pad
-    if (padID.indexOf("$") == -1) {
+    if (padID.indexOf("$") === -1) {
       // it's not a group pad, means we can grant access
 
       // get author for this token
@@ -225,17 +225,17 @@ exports.checkAccess = function(padID, sessionCookie, token, password, callback)
 
           // --> grant access
           statusObject = { accessStatus: "grant", authorID: sessionAuthor };
-        } else if (isPasswordProtected && passwordStatus == "correct") {
+        } else if (isPasswordProtected && passwordStatus === "correct") {
           // - the pad is password protected and password is correct
 
           // --> grant access
           statusObject = { accessStatus: "grant", authorID: sessionAuthor };
-        } else if (isPasswordProtected && passwordStatus == "wrong") {
+        } else if (isPasswordProtected && passwordStatus === "wrong") {
           // - the pad is password protected but wrong password given
 
           // --> deny access, ask for new password and tell them that the password is wrong
           statusObject = { accessStatus: "wrongPassword" };
-        } else if (isPasswordProtected && passwordStatus == "notGiven") {
+        } else if (isPasswordProtected && passwordStatus === "notGiven") {
           // - the pad is password protected but no password given
 
           // --> ask for password
@@ -261,17 +261,17 @@ exports.checkAccess = function(padID, sessionCookie, token, password, callback)
         if (isPublic && !isPasswordProtected) {
           // --> grant access, with author of token
           statusObject = {accessStatus: "grant", authorID: tokenAuthor};
-        } else if (isPublic && isPasswordProtected && passwordStatus == "correct") {
+        } else if (isPublic && isPasswordProtected && passwordStatus === "correct") {
           // - it's public and password protected and password is correct
 
           // --> grant access, with author of token
           statusObject = {accessStatus: "grant", authorID: tokenAuthor};
-        } else if (isPublic && isPasswordProtected && passwordStatus == "wrong") {
+        } else if (isPublic && isPasswordProtected && passwordStatus === "wrong") {
           // - it's public and the pad is password protected but wrong password given
 
           // --> deny access, ask for new password and tell them that the password is wrong
           statusObject = {accessStatus: "wrongPassword"};
-        } else if (isPublic && isPasswordProtected && passwordStatus == "notGiven") {
+        } else if (isPublic && isPasswordProtected && passwordStatus === "notGiven") {
           // - it's public and the pad is password protected but no password given
 
           // --> ask for password
diff --git a/src/node/handler/APIHandler.js b/src/node/handler/APIHandler.js
index 3ed7aa4e1..5d731ddc7 100644
--- a/src/node/handler/APIHandler.js
+++ b/src/node/handler/APIHandler.js
@@ -188,7 +188,7 @@ exports.handle = function(apiVersion, functionName, fields, req, res)
   // check the api key!
   fields["apikey"] = fields["apikey"] || fields["api_key"];
 
-  if (fields["apikey"] != apikey.trim()) {
+  if (fields["apikey"] !== apikey.trim()) {
     res.statusCode = 401;
     res.send({code: 4, message: "no or wrong API Key", data: null});
     return;
diff --git a/src/node/handler/SocketIORouter.js b/src/node/handler/SocketIORouter.js
index a94080b9d..08f9f47e8 100644
--- a/src/node/handler/SocketIORouter.js
+++ b/src/node/handler/SocketIORouter.js
@@ -95,7 +95,7 @@ exports.setSocketIO = function(_socket) {
           var checkAccessCallback = function(err, statusObject) {
             ERR(err);
 
-            if (statusObject.accessStatus == "grant") {
+            if (statusObject.accessStatus === "grant") {
               // access was granted, mark the client as authorized and handle the message
               clientAuthorized = true;
               handleMessage(client, message);
diff --git a/src/node/padaccess.js b/src/node/padaccess.js
index c8c888cd0..a25ad642c 100644
--- a/src/node/padaccess.js
+++ b/src/node/padaccess.js
@@ -6,7 +6,7 @@ module.exports = function (req, res, callback) {
   securityManager.checkAccess(req.params.pad, req.cookies.sessionID, req.cookies.token, req.cookies.password, function(err, accessObj) {
     if (ERR(err, callback)) return;
 
-    if (accessObj.accessStatus == "grant") {
+    if (accessObj.accessStatus === "grant") {
       // there is access, continue
       callback();
     } else {