diff --git a/.eslintrc.json b/.eslintrc.json
index 5548d3d577..a1c24b5158 100644
--- a/.eslintrc.json
+++ b/.eslintrc.json
@@ -178,7 +178,9 @@
         "no-underscore-dangle": 1,
         "no-loop-func": 2,
         "no-labels": 2,
-        "no-unused-vars": 1,
+        "no-unused-vars": ["error", { "vars": "local", "args": "after-used",
+                                      "varsIgnorePattern": "print_elapsed_time"
+                                    }],
         "no-script-url": 2,
         "no-proto": 2,
         "no-iterator": 2,
diff --git a/static/js/click_handlers.js b/static/js/click_handlers.js
index d2c78320bb..926eff6069 100644
--- a/static/js/click_handlers.js
+++ b/static/js/click_handlers.js
@@ -128,13 +128,13 @@ $(function () {
         e.stopPropagation();
         popovers.hide_all();
     });
-    $("body").on("click", "a", function (e) {
+    $("body").on("click", "a", function () {
         if (document.activeElement === this) {
             ui.blur_active_element();
         }
     });
 
-    $(window).on("focus", function (e) {
+    $(window).on("focus", function () {
         meta.focusing = true;
     });
 
diff --git a/static/js/compose.js b/static/js/compose.js
index de924f5bca..f07f42e996 100644
--- a/static/js/compose.js
+++ b/static/js/compose.js
@@ -1065,7 +1065,7 @@ $(function () {
         Dropbox.choose(options);
     });
 
-    function uploadStarted(i, file, len) {
+    function uploadStarted() {
         $("#compose-send-button").attr("disabled", "");
         $("#send-status").addClass("alert-info")
                          .show();
@@ -1107,7 +1107,7 @@ $(function () {
         $("#error-msg").text(msg);
     }
 
-    function uploadFinished(i, file, response, time) {
+    function uploadFinished(i, file, response) {
         if (response.uri === undefined) {
             return;
         }
diff --git a/static/js/muting_ui.js b/static/js/muting_ui.js
index 7e02aff6f6..d040c8296e 100644
--- a/static/js/muting_ui.js
+++ b/static/js/muting_ui.js
@@ -36,7 +36,7 @@ exports.notify_with_undo_option = (function () {
             }
         }
     };
-    var interval = setInterval(function () {
+    setInterval(function () {
         if (meta.hide_me_time < new Date().getTime() && !meta.alert_hover_state) {
             animate.fadeOut();
         }
diff --git a/static/js/narrow.js b/static/js/narrow.js
index 525a4ad6ff..1d2a756d46 100644
--- a/static/js/narrow.js
+++ b/static/js/narrow.js
@@ -319,7 +319,7 @@ exports.activate = function (raw_operators, opts) {
         num_after: 50,
         msg_list: message_list.narrowed,
         use_first_unread_anchor: opts.first_unread_from_server,
-        cont: function (messages) {
+        cont: function () {
             ui.hide_loading_more_messages_indicator();
             if (defer_selecting_closest) {
                 maybe_select_closest();
diff --git a/static/js/settings.js b/static/js/settings.js
index f6cbed4a8b..133df53acb 100644
--- a/static/js/settings.js
+++ b/static/js/settings.js
@@ -730,7 +730,7 @@ function _setup_page() {
 
     });
 
-    $("#bots_list").on("click", "a.download_bot_zuliprc", function (e) {
+    $("#bots_list").on("click", "a.download_bot_zuliprc", function () {
         var bot_info = $(this).parent().parent();
         var email = bot_info.find(".email .value").text();
         var api_key = bot_info.find(".api_key .api-key-value-and-button .value").text();
@@ -740,7 +740,7 @@ function _setup_page() {
         ));
     });
 
-    $("#download_zuliprc").on("click", function (e) {
+    $("#download_zuliprc").on("click", function () {
         $(this).attr("href", settings.generate_zuliprc_uri(
             page_params.email,
             $("#api_key_value").text()
diff --git a/static/js/stream_list.js b/static/js/stream_list.js
index 13148ea971..90df0e6463 100644
--- a/static/js/stream_list.js
+++ b/static/js/stream_list.js
@@ -428,7 +428,7 @@ $(function () {
         }
     });
 
-    $(document).on('narrow_deactivated.zulip', function (event) {
+    $(document).on('narrow_deactivated.zulip', function () {
         reset_to_unnarrowed();
         $("#global_filters li[data-name='home']").addClass('active-filter');
     });
diff --git a/static/js/subs.js b/static/js/subs.js
index a4f504982e..a60e7a3781 100644
--- a/static/js/subs.js
+++ b/static/js/subs.js
@@ -545,7 +545,7 @@ exports.setup_page = function (callback) {
                 { label: "Subscribed" },
                 { label: "All Streams" },
             ],
-            callback: function (name) {
+            callback: function () {
                 actually_filter_streams();
                 remove_temporarily_miscategorized_streams();
             }