diff --git a/examples/blobhttp.js b/examples/blobhttp.js
index 8e5f235..b73d101 100644
--- a/examples/blobhttp.js
+++ b/examples/blobhttp.js
@@ -29,7 +29,6 @@
  *
  *****************************************************************************/
 
-var fs = require('fs');
 var http = require('http');
 var url = require('url');
 
diff --git a/examples/blobstream2.js b/examples/blobstream2.js
index 25a401e..34d9745 100644
--- a/examples/blobstream2.js
+++ b/examples/blobstream2.js
@@ -87,7 +87,7 @@ oracledb.getConnection(
                  });
                });
         lob.on('close',
-               function(chunk)
+               function()
                {
                  console.log("lob.on 'close' event");
                });
diff --git a/examples/clobinsert2.js b/examples/clobinsert2.js
index 83023c4..e1cc252 100644
--- a/examples/clobinsert2.js
+++ b/examples/clobinsert2.js
@@ -26,12 +26,9 @@
  *
  *****************************************************************************/
 
-var fs = require('fs');
 var oracledb = require('oracledb');
 var dbConfig = require('./dbconfig.js');
 
-var inFileName = 'clobexample.txt';  // the file with text to be inserted into the database
-
 oracledb.getConnection(
   {
     user          : dbConfig.user,
diff --git a/examples/clobstream2.js b/examples/clobstream2.js
index 49cb4a6..2f5cad8 100644
--- a/examples/clobstream2.js
+++ b/examples/clobstream2.js
@@ -82,7 +82,7 @@ oracledb.getConnection(
                   });
                 });
         lob.on('close',
-               function(chunk)
+               function()
                {
                  console.log("lob.on 'close' event");
                });
diff --git a/examples/dbmsoutputgetline.js b/examples/dbmsoutputgetline.js
index f20a3c6..e3606d1 100644
--- a/examples/dbmsoutputgetline.js
+++ b/examples/dbmsoutputgetline.js
@@ -87,4 +87,4 @@ var fetchDbmsOutputLine = function (conn, cb) {
         return fetchDbmsOutputLine(conn, cb);
       }
     });
-  };
+};
diff --git a/examples/fetchinfo.js b/examples/fetchinfo.js
index 8990fcc..4ef742d 100644
--- a/examples/fetchinfo.js
+++ b/examples/fetchinfo.js
@@ -52,8 +52,8 @@ oracledb.getConnection(
       {
         fetchInfo :
         {
-	  "HIRE_DATE":      { type : oracledb.STRING },  // return the date as a string
-	  "COMMISSION_PCT": { type : oracledb.DEFAULT }  // override oracledb.fetchAsString
+          "HIRE_DATE":      { type : oracledb.STRING },  // return the date as a string
+          "COMMISSION_PCT": { type : oracledb.DEFAULT }  // override oracledb.fetchAsString
         }
       },
       function(err, result)
diff --git a/examples/selectjson.js b/examples/selectjson.js
index 08ec9c8..755f0e3 100644
--- a/examples/selectjson.js
+++ b/examples/selectjson.js
@@ -72,7 +72,7 @@ oracledb.getConnection(
             if (err) {
               console.error(err.message);
             } else {
-              js = JSON.parse(result.rows[0][0]);  // just show first record
+              var js = JSON.parse(result.rows[0][0]);  // just show first record
               console.log('Query results: ', js);
             }
             doRelease(connection);
diff --git a/examples/version.js b/examples/version.js
index de6c468..a733ce4 100644
--- a/examples/version.js
+++ b/examples/version.js
@@ -66,4 +66,4 @@ oracledb.getConnection(
     portUpdate = serverVer % 100 ;
     console.log ("Oracle Database version: " + serverVer);
     console.log("Oracle Database text format: " + major + "." + minor + "." + update + "." + port + "." + portUpdate);
-});
+  });
diff --git a/examples/webapp.js b/examples/webapp.js
index cad1dbb..6dcd467 100644
--- a/examples/webapp.js
+++ b/examples/webapp.js
@@ -33,7 +33,6 @@
  *****************************************************************************/
 
 var http     = require('http');
-var url      = require('url');
 var oracledb = require('oracledb');
 var dbConfig = require('./dbconfig.js');
 
@@ -60,7 +59,7 @@ oracledb.createPool (
     }
 
     // Create HTTP server and listen on port - portid
-    hs = http.createServer (
+    var hs = http.createServer (
       function(request, response)  // Callback gets HTTP request & response object
       {
         var urlparts = request.url.split("/");
@@ -151,13 +150,13 @@ function displayResults(response, result, deptid)
 
   // Column Title
   response.write("<tr>");
-  for (col = 0; col < result.metaData.length; col++) {
+  for (var col = 0; col < result.metaData.length; col++) {
     response.write("<td>" + result.metaData[col].name + "</td>");
   }
   response.write("</tr>");
 
   // Rows
-  for (row = 0; row < result.rows.length; row++) {
+  for (var row = 0; row < result.rows.length; row++) {
     response.write("<tr>");
     for (col = 0; col < result.rows[row].length; col++) {
       response.write("<td>" + result.rows[row][col] + "</td>");