diff --git a/app/assets/javascripts/check_all_none.js b/app/assets/javascripts/check_all_none.js
index 8684a7cf7..ac52cdd79 100644
--- a/app/assets/javascripts/check_all_none.js
+++ b/app/assets/javascripts/check_all_none.js
@@ -2,13 +2,17 @@
   "use strict";
   App.CheckAllNone = {
     initialize: function() {
-      $("[data-check-all]").on("click", function() {
+      $("[data-check-all]").on("click", function(e) {
         var target_name;
+        e.preventDefault();
+        e.stopPropagation();
         target_name = $(this).data("check-all");
         $("[name='" + target_name + "']").prop("checked", true);
       });
-      $("[data-check-none]").on("click", function() {
+      $("[data-check-none]").on("click", function(e) {
         var target_name;
+        e.preventDefault();
+        e.stopPropagation();
         target_name = $(this).data("check-none");
         $("[name='" + target_name + "']").prop("checked", false);
       });
diff --git a/app/assets/javascripts/managers.js b/app/assets/javascripts/managers.js
index 4a87fa7e4..b66914f2a 100644
--- a/app/assets/javascripts/managers.js
+++ b/app/assets/javascripts/managers.js
@@ -17,10 +17,14 @@
       $("#user_password").prop("type", type);
     },
     initialize: function() {
-      $(".generate-random-value").on("click", function() {
+      $(".generate-random-value").on("click", function(e) {
+        e.preventDefault();
+        e.stopPropagation();
         $("#user_password").val(App.Managers.generatePassword());
       });
-      $(".show-password").on("click", function() {
+      $(".show-password").on("click", function(e) {
+        e.preventDefault();
+        e.stopPropagation();
         if ($("#user_password").is("input[type='password']")) {
           App.Managers.togglePassword("text");
         } else {
diff --git a/app/assets/javascripts/markdown_editor.js b/app/assets/javascripts/markdown_editor.js
index 7369c356f..7f6c62710 100644
--- a/app/assets/javascripts/markdown_editor.js
+++ b/app/assets/javascripts/markdown_editor.js
@@ -28,8 +28,10 @@
         editor.find("textarea").on("scroll", function() {
           editor.find(".markdown-preview").scrollTop($(this).scrollTop());
         });
-        editor.find(".fullscreen-toggle").on("click", function() {
+        editor.find(".fullscreen-toggle").on("click", function(e) {
           var span;
+          e.preventDefault();
+          e.stopPropagation();
           editor.toggleClass("fullscreen");
           $(".fullscreen-container").toggleClass("medium-8", "medium-12");
           span = $(this).find("span");