Merge branch 'v4-dev' of https://github.com/twbs/bootstrap into v4-dev

1 files changed, 8 insertions, 4 deletions

diff --git a/js/dist/carousel.js b/js/dist/carousel.js
index aedad9ddf..70a72703d 100644
--- a/js/dist/carousel.js
+++ b/js/dist/carousel.js
@@ -26,6 +26,8 @@ var Carousel = (function ($) {
   var DATA_API_KEY = '.data-api';
   var JQUERY_NO_CONFLICT = $.fn[NAME];
   var TRANSITION_DURATION = 600;
+  var ARROW_LEFT_KEYCODE = 37; // KeyboardEvent.which value for left arrow key
+  var ARROW_RIGHT_KEYCODE = 39; // KeyboardEvent.which value for right arrow key
 
   var Default = {
     interval: 5000,
@@ -241,10 +243,12 @@ var Carousel = (function ($) {
         }
 
         switch (event.which) {
-          case 37:
-            this.prev();break;
-          case 39:
-            this.next();break;
+          case ARROW_LEFT_KEYCODE:
+            this.prev();
+            break;
+          case ARROW_RIGHT_KEYCODE:
+            this.next();
+            break;
           default:
             return;
         }