another run on undefined comparators

js/gui.js

@@ -30,7 +30,7 @@ var GUI_control = function () {
 // interval = time interval in miliseconds
 // first = true/false if code should be ran initially before next timer interval hits
 GUI_control.prototype.interval_add = function (name, code, interval, first) {
-    var data = {'name': name, 'timer': undefined, 'code': code, 'interval': interval, 'fired': 0, 'paused': false};
+    var data = {'name': name, 'timer': null, 'code': code, 'interval': interval, 'fired': 0, 'paused': false};
 
     if (first == true) {
         code(); // execute code
@@ -132,7 +132,7 @@ GUI_control.prototype.interval_kill_all = function (keep_array) {
 // timeout = timeout in miliseconds
 GUI_control.prototype.timeout_add = function (name, code, timeout) {
     var self = this;
-    var data = {'name': name, 'timer': undefined, 'timeout': timeout};
+    var data = {'name': name, 'timer': null, 'timeout': timeout};
 
     // start timer with "cleaning" callback
     data.timer = setTimeout(function() {

js/msp.js

@@ -61,8 +61,8 @@ var MSP = {
     code:                       0,
     message_length_expected:    0,
     message_length_received:    0,
-    message_buffer:             undefined,
-    message_buffer_uint8_view:  undefined,
+    message_buffer:             null,
+    message_buffer_uint8_view:  null,
     message_checksum:           0,
 
     callbacks:                  [],

js/serial.js

@@ -13,7 +13,7 @@ var serial = {
         var self = this;
 
         chrome.serial.connect(path, options, function(connectionInfo) {
-            if (connectionInfo !== undefined) {
+            if (connectionInfo) {
                 self.connectionId = connectionInfo.connectionId;
                 self.bitrate = connectionInfo.bitrate;
                 self.bytes_received = 0;

js/serial_backend.js

@@ -61,7 +61,7 @@ $(document).ready(function() {
 
     // auto-connect
     chrome.storage.local.get('auto_connect', function (result) {
-        if (typeof result.auto_connect === 'undefined' || result.auto_connect) {
+        if (!result.auto_connect || result.auto_connect) {
             // default or enabled by user
             GUI.auto_connect = true;
 
@@ -112,7 +112,7 @@ function onOpen(openInfo) {
 
         // save selected port with chrome.storage if the port differs
         chrome.storage.local.get('last_used_port', function (result) {
-            if (typeof result.last_used_port != 'undefined') {
+            if (result.last_used_port) {
                 if (result.last_used_port != GUI.connected_to) {
                     // last used port doesn't match the one found in local db, we will store the new one
                     chrome.storage.local.set({'last_used_port': GUI.connected_to});

tabs/receiver.js

@@ -28,7 +28,7 @@ TABS.receiver.initialize = function (callback) {
         $('.tunings .rate input[name="expo"]').val(RC_tuning.RC_EXPO.toFixed(2));
 
         chrome.storage.local.get('rx_refresh_rate', function (result) {
-            if (typeof result.rx_refresh_rate != 'undefined') {
+            if (result.rx_refresh_rate) {
                 $('select[name="rx_refresh_rate"]').val(result.rx_refresh_rate).change();
             } else {
                 $('select[name="rx_refresh_rate"]').change(); // start with default value