diff --git a/src/bootstrap-tagsinput.js b/src/bootstrap-tagsinput.js
index c1bbd505..8ee8ed23 100644
--- a/src/bootstrap-tagsinput.js
+++ b/src/bootstrap-tagsinput.js
@@ -19,8 +19,8 @@
     addOnBlur: true,
     maxTags: undefined,
     maxChars: undefined,
-    confirmKeys: [13, 44],
-    deleteKeys: [8, 46],
+    confirmKeys: ['Enter', ','],
+    deleteKeys: ['Backspace', 'Delete'],
     delimiter: ',',
     delimiterRegex: null,
     cancelConfirmKeysOnEmpty: false,
@@ -405,10 +405,10 @@
           return;
         }
 
-        switch (event.which) {
+        switch (event.key) {
           // BACKSPACE
-          case 8:
-            if(self.options.deleteKeys && jQuery.inArray(event.which, self.options.deleteKeys) > -1){
+          case 'Backspace':
+            if(self.options.deleteKeys && keyInList(event, self.options.deleteKeys) > -1){
               if (doGetCaretPosition($input[0]) === 0) {
                 var prev = $inputWrapper.prev();
                 if (prev.length) {
@@ -419,8 +419,8 @@
             break;
 
           // DELETE
-          case 46:
-            if(self.options.deleteKeys && jQuery.inArray(event.which, self.options.deleteKeys) > -1) {
+          case 'Delete':
+            if(self.options.deleteKeys && keyInList(event, self.options.deleteKeys) > -1) {
               if (doGetCaretPosition($input[0]) === 0) {
                 var next = $inputWrapper.next();
                 if (next.length) {
@@ -431,7 +431,7 @@
             break;
 
           // LEFT ARROW
-          case 37:
+          case 'ArrowLeft':
             // Try to move the input before the previous tag
             var $prevTag = $inputWrapper.prev();
             if ($input.val().length === 0 && $prevTag[0]) {
@@ -440,7 +440,7 @@
             }
             break;
           // RIGHT ARROW
-          case 39:
+          case 'ArrowRight':
             // Try to move the input after the next tag
             var $nextTag = $inputWrapper.next();
             if ($input.val().length === 0 && $nextTag[0]) {
@@ -469,7 +469,7 @@
 
          var text = $input.val(),
          maxLengthReached = self.options.maxChars && text.length >= self.options.maxChars;
-         if (self.options.freeInput && (keyCombinationInList(event, self.options.confirmKeys) || maxLengthReached)) {
+         if (self.options.freeInput && (keyInList(event, self.options.confirmKeys) || maxLengthReached)) {
             // Only attempt to add a tag if there is data in the field
             if (text.length !== 0) {
                self.add(maxLengthReached ? text.substr(0, self.options.maxChars) : text);
@@ -661,32 +661,10 @@
   }
 
   /**
-    * Returns boolean indicates whether user has pressed an expected key combination.
-    * @param object keyPressEvent: JavaScript event object, refer
-    *     http://www.w3.org/TR/2003/WD-DOM-Level-3-Events-20030331/ecma-script-binding.html
-    * @param object lookupList: expected key combinations, as in:
-    *     [13, {which: 188, shiftKey: true}]
-    */
-  function keyCombinationInList(keyPressEvent, lookupList) {
-      var found = false;
-      $.each(lookupList, function (index, keyCombination) {
-          if (typeof (keyCombination) === 'number' && keyPressEvent.which === keyCombination) {
-              found = true;
-              return false;
-          }
-
-          if (keyPressEvent.which === keyCombination.which) {
-              var alt = !keyCombination.hasOwnProperty('altKey') || keyPressEvent.altKey === keyCombination.altKey,
-                  shift = !keyCombination.hasOwnProperty('shiftKey') || keyPressEvent.shiftKey === keyCombination.shiftKey,
-                  ctrl = !keyCombination.hasOwnProperty('ctrlKey') || keyPressEvent.ctrlKey === keyCombination.ctrlKey;
-              if (alt && shift && ctrl) {
-                  found = true;
-                  return false;
-              }
-          }
-      });
-
-      return found;
+   * Use event.key rather than event.which as which is deprecated.
+   */
+  function keyInList(keyPressEvent, lookupList) {
+    return $.inArray(keyPressEvent.key, lookupList) !== -1;
   }
 
   /**