diff --git a/dist/hotkeys.common.js b/dist/hotkeys.common.js
index 340bcb14..479b2be1 100644
--- a/dist/hotkeys.common.js
+++ b/dist/hotkeys.common.js
@@ -1,5 +1,5 @@
 /*!
- * hotkeys-js v3.7.1
+ * hotkeys-js v3.7.2
  * A simple micro-library for defining and dispatching keyboard shortcuts. It has no dependencies.
  * 
  * Copyright (c) 2019 kenny wong <wowohoo@qq.com>
@@ -79,7 +79,6 @@ function compareArray(a1, a2) {
 }
 
 var _keyMap = {
-  // 特殊键
   backspace: 8,
   tab: 9,
   clear: 12,
@@ -113,9 +112,9 @@ var _keyMap = {
   '[': 219,
   ']': 221,
   '\\': 220
-};
+}; // Modifier Keys
+
 var _modifier = {
-  // 修饰键
   // shiftKey
   '⇧': 16,
   shift: 16,
@@ -136,7 +135,6 @@ var modifierMap = {
   16: 'shiftKey',
   18: 'altKey',
   17: 'ctrlKey',
-  // 兼容Firefox处理
   91: 'metaKey',
   shiftKey: 16,
   ctrlKey: 17,
@@ -147,10 +145,9 @@ var _mods = {
   16: false,
   18: false,
   17: false,
-  // 兼容Firefox处理
   91: false
 };
-var _handlers = {}; // F1~F12 特殊键
+var _handlers = {}; // F1~F12 special key
 
 for (var k = 1; k < 20; k++) {
   _keyMap["f".concat(k)] = 111 + k;
diff --git a/dist/hotkeys.common.min.js b/dist/hotkeys.common.min.js
index 9ca45bef..70e3e9a9 100644
--- a/dist/hotkeys.common.min.js
+++ b/dist/hotkeys.common.min.js
@@ -1,2 +1,2 @@
-/*! hotkeys-js v3.7.1 | MIT (c) 2019 kenny wong <wowohoo@qq.com> | http://jaywcjlove.github.io/hotkeys */
+/*! hotkeys-js v3.7.2 | MIT (c) 2019 kenny wong <wowohoo@qq.com> | http://jaywcjlove.github.io/hotkeys */
 "use strict";function _typeof(e){return(_typeof="function"==typeof Symbol&&"symbol"==typeof Symbol.iterator?function(e){return typeof e}:function(e){return e&&"function"==typeof Symbol&&e.constructor===Symbol&&e!==Symbol.prototype?"symbol":typeof e})(e)}var isff="undefined"!=typeof navigator&&0<navigator.userAgent.toLowerCase().indexOf("firefox");function addEvent(e,o,t){e.addEventListener?e.addEventListener(o,t,!1):e.attachEvent&&e.attachEvent("on".concat(o),function(){t(window.event)})}function getMods(e,o){for(var t=o.slice(0,o.length-1),n=0;n<t.length;n++)t[n]=e[t[n].toLowerCase()];return t}function getKeys(e){"string"!=typeof e&&(e="");for(var o=(e=e.replace(/\s/g,"")).split(","),t=o.lastIndexOf("");0<=t;)o[t-1]+=",",o.splice(t,1),t=o.lastIndexOf("");return o}function compareArray(e,o){for(var t=e.length<o.length?o:e,n=e.length<o.length?e:o,r=!0,s=0;s<t.length;s++)~n.indexOf(t[s])||(r=!1);return r}for(var _keyMap={backspace:8,tab:9,clear:12,enter:13,return:13,esc:27,escape:27,space:32,left:37,up:38,right:39,down:40,del:46,delete:46,ins:45,insert:45,home:36,end:35,pageup:33,pagedown:34,capslock:20,"\u21ea":20,",":188,".":190,"/":191,"`":192,"-":isff?173:189,"=":isff?61:187,";":isff?59:186,"'":222,"[":219,"]":221,"\\":220},_modifier={"\u21e7":16,shift:16,"\u2325":18,alt:18,option:18,"\u2303":17,ctrl:17,control:17,"\u2318":91,cmd:91,command:91},modifierMap={16:"shiftKey",18:"altKey",17:"ctrlKey",91:"metaKey",shiftKey:16,ctrlKey:17,altKey:18,metaKey:91},_mods={16:!1,18:!1,17:!1,91:!1},_handlers={},k=1;k<20;k++)_keyMap["f".concat(k)]=111+k;var _downKeys=[],_scope="all",elementHasBindEvent=[],code=function(e){return _keyMap[e.toLowerCase()]||_modifier[e.toLowerCase()]||e.toUpperCase().charCodeAt(0)};function setScope(e){_scope=e||"all"}function getScope(){return _scope||"all"}function getPressedKeyCodes(){return _downKeys.slice(0)}function filter(e){var o=e.target||e.srcElement,t=o.tagName,n=!0;return!o.isContentEditable&&"TEXTAREA"!==t&&("INPUT"!==t&&"TEXTAREA"!==t||o.readOnly)||(n=!1),n}function isPressed(e){return"string"==typeof e&&(e=code(e)),!!~_downKeys.indexOf(e)}function deleteScope(e,o){var t,n;for(var r in e||(e=getScope()),_handlers)if(Object.prototype.hasOwnProperty.call(_handlers,r))for(t=_handlers[r],n=0;n<t.length;)t[n].scope===e?t.splice(n,1):n++;getScope()===e&&setScope(o||"all")}function clearModifier(e){var o=e.keyCode||e.which||e.charCode,t=_downKeys.indexOf(o);if(t<0||_downKeys.splice(t,1),e.key&&"meta"==e.key.toLowerCase()&&_downKeys.splice(0,_downKeys.length),93!==o&&224!==o||(o=91),o in _mods)for(var n in _mods[o]=!1,_modifier)_modifier[n]===o&&(hotkeys[n]=!1)}function unbind(e){if(e){if(Array.isArray(e))e.forEach(function(e){e.key&&eachUnbind(e)});else if("object"===_typeof(e))e.key&&eachUnbind(e);else if("string"==typeof e){for(var o=arguments.length,t=Array(1<o?o-1:0),n=1;n<o;n++)t[n-1]=arguments[n];var r=t[0],s=t[1];"function"==typeof r&&(s=r,r=""),eachUnbind({key:e,scope:r,method:s,splitKey:"+"})}}else Object.keys(_handlers).forEach(function(e){return delete _handlers[e]})}var eachUnbind=function(e){var i=e.scope,d=e.method,o=e.splitKey,a=void 0===o?"+":o;getKeys(e.key).forEach(function(e){var o=e.split(a),t=o.length,n=o[t-1],r="*"===n?"*":code(n);if(_handlers[r]){i||(i=getScope());var s=1<t?getMods(_modifier,o):[];_handlers[r]=_handlers[r].map(function(e){return(!d||e.method===d)&&e.scope===i&&compareArray(e.mods,s)?{}:e})}})};function eventHandler(e,o,t){var n;if(o.scope===t||"all"===o.scope){for(var r in n=0<o.mods.length,_mods)Object.prototype.hasOwnProperty.call(_mods,r)&&(!_mods[r]&&-1<o.mods.indexOf(+r)||_mods[r]&&!~o.mods.indexOf(+r))&&(n=!1);(0!==o.mods.length||_mods[16]||_mods[18]||_mods[17]||_mods[91])&&!n&&"*"!==o.shortcut||!1===o.method(e,o)&&(e.preventDefault?e.preventDefault():e.returnValue=!1,e.stopPropagation&&e.stopPropagation(),e.cancelBubble&&(e.cancelBubble=!0))}}function dispatch(t){var e=_handlers["*"],o=t.keyCode||t.which||t.charCode;if(hotkeys.filter.call(this,t)){if(93!==o&&224!==o||(o=91),~_downKeys.indexOf(o)||229===o||_downKeys.push(o),["ctrlKey","altKey","shiftKey","metaKey"].forEach(function(e){var o=modifierMap[e];t[e]&&!~_downKeys.indexOf(o)?_downKeys.push(o):!t[e]&&-1<_downKeys.indexOf(o)&&_downKeys.splice(_downKeys.indexOf(o),1)}),o in _mods){for(var n in _mods[o]=!0,_modifier)_modifier[n]===o&&(hotkeys[n]=!0);if(!e)return}for(var r in _mods)Object.prototype.hasOwnProperty.call(_mods,r)&&(_mods[r]=t[modifierMap[r]]);var s=getScope();if(e)for(var i=0;i<e.length;i++)e[i].scope===s&&("keydown"===t.type&&e[i].keydown||"keyup"===t.type&&e[i].keyup)&&eventHandler(t,e[i],s);if(o in _handlers)for(var d=0;d<_handlers[o].length;d++)if(("keydown"===t.type&&_handlers[o][d].keydown||"keyup"===t.type&&_handlers[o][d].keyup)&&_handlers[o][d].key){for(var a=_handlers[o][d],c=a.key.split(a.splitKey),f=[],l=0;l<c.length;l++)f.push(code(c[l]));f.sort().join("")===_downKeys.sort().join("")&&eventHandler(t,a,s)}}}function isElementBind(e){return-1<elementHasBindEvent.indexOf(e)}function hotkeys(e,o,t){_downKeys=[];var n=getKeys(e),r=[],s="all",i=document,d=0,a=!1,c=!0,f="+";for(void 0===t&&"function"==typeof o&&(t=o),"[object Object]"===Object.prototype.toString.call(o)&&(o.scope&&(s=o.scope),o.element&&(i=o.element),o.keyup&&(a=o.keyup),void 0!==o.keydown&&(c=o.keydown),"string"==typeof o.splitKey&&(f=o.splitKey)),"string"==typeof o&&(s=o);d<n.length;d++)r=[],1<(e=n[d].split(f)).length&&(r=getMods(_modifier,e)),(e="*"===(e=e[e.length-1])?"*":code(e))in _handlers||(_handlers[e]=[]),_handlers[e].push({keyup:a,keydown:c,scope:s,mods:r,shortcut:n[d],method:t,key:n[d],splitKey:f});void 0!==i&&!isElementBind(i)&&window&&(elementHasBindEvent.push(i),addEvent(i,"keydown",function(e){dispatch(e)}),addEvent(window,"focus",function(){_downKeys=[]}),addEvent(i,"keyup",function(e){dispatch(e),clearModifier(e)}))}var _api={setScope:setScope,getScope:getScope,deleteScope:deleteScope,getPressedKeyCodes:getPressedKeyCodes,isPressed:isPressed,filter:filter,unbind:unbind};for(var a in _api)Object.prototype.hasOwnProperty.call(_api,a)&&(hotkeys[a]=_api[a]);if("undefined"!=typeof window){var _hotkeys=window.hotkeys;hotkeys.noConflict=function(e){return e&&window.hotkeys===hotkeys&&(window.hotkeys=_hotkeys),hotkeys},window.hotkeys=hotkeys}module.exports=hotkeys;
\ No newline at end of file
diff --git a/dist/hotkeys.esm.js b/dist/hotkeys.esm.js
index 2d95526a..233c3428 100644
--- a/dist/hotkeys.esm.js
+++ b/dist/hotkeys.esm.js
@@ -1,5 +1,5 @@
 /*!
- * hotkeys-js v3.7.1
+ * hotkeys-js v3.7.2
  * A simple micro-library for defining and dispatching keyboard shortcuts. It has no dependencies.
  * 
  * Copyright (c) 2019 kenny wong <wowohoo@qq.com>
@@ -77,7 +77,6 @@ function compareArray(a1, a2) {
 }
 
 var _keyMap = {
-  // 特殊键
   backspace: 8,
   tab: 9,
   clear: 12,
@@ -111,9 +110,9 @@ var _keyMap = {
   '[': 219,
   ']': 221,
   '\\': 220
-};
+}; // Modifier Keys
+
 var _modifier = {
-  // 修饰键
   // shiftKey
   '⇧': 16,
   shift: 16,
@@ -134,7 +133,6 @@ var modifierMap = {
   16: 'shiftKey',
   18: 'altKey',
   17: 'ctrlKey',
-  // 兼容Firefox处理
   91: 'metaKey',
   shiftKey: 16,
   ctrlKey: 17,
@@ -145,10 +143,9 @@ var _mods = {
   16: false,
   18: false,
   17: false,
-  // 兼容Firefox处理
   91: false
 };
-var _handlers = {}; // F1~F12 特殊键
+var _handlers = {}; // F1~F12 special key
 
 for (var k = 1; k < 20; k++) {
   _keyMap["f".concat(k)] = 111 + k;
diff --git a/dist/hotkeys.js b/dist/hotkeys.js
index 688d6db0..7e8d6ecd 100644
--- a/dist/hotkeys.js
+++ b/dist/hotkeys.js
@@ -1,5 +1,5 @@
 /*!
- * hotkeys-js v3.7.1
+ * hotkeys-js v3.7.2
  * A simple micro-library for defining and dispatching keyboard shortcuts. It has no dependencies.
  * 
  * Copyright (c) 2019 kenny wong <wowohoo@qq.com>
@@ -83,7 +83,6 @@
   }
 
   var _keyMap = {
-    // 特殊键
     backspace: 8,
     tab: 9,
     clear: 12,
@@ -117,9 +116,9 @@
     '[': 219,
     ']': 221,
     '\\': 220
-  };
+  }; // Modifier Keys
+
   var _modifier = {
-    // 修饰键
     // shiftKey
     '⇧': 16,
     shift: 16,
@@ -140,7 +139,6 @@
     16: 'shiftKey',
     18: 'altKey',
     17: 'ctrlKey',
-    // 兼容Firefox处理
     91: 'metaKey',
     shiftKey: 16,
     ctrlKey: 17,
@@ -151,10 +149,9 @@
     16: false,
     18: false,
     17: false,
-    // 兼容Firefox处理
     91: false
   };
-  var _handlers = {}; // F1~F12 特殊键
+  var _handlers = {}; // F1~F12 special key
 
   for (var k = 1; k < 20; k++) {
     _keyMap["f".concat(k)] = 111 + k;
diff --git a/dist/hotkeys.min.js b/dist/hotkeys.min.js
index 5e3c429c..e4e8dfe2 100644
--- a/dist/hotkeys.min.js
+++ b/dist/hotkeys.min.js
@@ -1,2 +1,2 @@
-/*! hotkeys-js v3.7.1 | MIT (c) 2019 kenny wong <wowohoo@qq.com> | http://jaywcjlove.github.io/hotkeys */
+/*! hotkeys-js v3.7.2 | MIT (c) 2019 kenny wong <wowohoo@qq.com> | http://jaywcjlove.github.io/hotkeys */
 !function(e,t){"object"==typeof exports&&"undefined"!=typeof module?module.exports=t():"function"==typeof define&&define.amd?define(t):(e=e||self).hotkeys=t()}(this,function(){"use strict";function f(e){return(f="function"==typeof Symbol&&"symbol"==typeof Symbol.iterator?function(e){return typeof e}:function(e){return e&&"function"==typeof Symbol&&e.constructor===Symbol&&e!==Symbol.prototype?"symbol":typeof e})(e)}var e="undefined"!=typeof navigator&&0<navigator.userAgent.toLowerCase().indexOf("firefox");function p(e,t,n){e.addEventListener?e.addEventListener(t,n,!1):e.attachEvent&&e.attachEvent("on".concat(t),function(){n(window.event)})}function y(e,t){for(var n=t.slice(0,t.length-1),o=0;o<n.length;o++)n[o]=e[n[o].toLowerCase()];return n}function u(e){"string"!=typeof e&&(e="");for(var t=(e=e.replace(/\s/g,"")).split(","),n=t.lastIndexOf("");0<=n;)t[n-1]+=",",t.splice(n,1),n=t.lastIndexOf("");return t}for(var t={backspace:8,tab:9,clear:12,enter:13,return:13,esc:27,escape:27,space:32,left:37,up:38,right:39,down:40,del:46,delete:46,ins:45,insert:45,home:36,end:35,pageup:33,pagedown:34,capslock:20,"\u21ea":20,",":188,".":190,"/":191,"`":192,"-":e?173:189,"=":e?61:187,";":e?59:186,"'":222,"[":219,"]":221,"\\":220},d={"\u21e7":16,shift:16,"\u2325":18,alt:18,option:18,"\u2303":17,ctrl:17,control:17,"\u2318":91,cmd:91,command:91},h={16:"shiftKey",18:"altKey",17:"ctrlKey",91:"metaKey",shiftKey:16,ctrlKey:17,altKey:18,metaKey:91},v={16:!1,18:!1,17:!1,91:!1},g={},n=1;n<20;n++)t["f".concat(n)]=111+n;var w=[],o="all",k=[],m=function(e){return t[e.toLowerCase()]||d[e.toLowerCase()]||e.toUpperCase().charCodeAt(0)};function i(e){o=e||"all"}function b(){return o||"all"}function c(e){var f=e.scope,c=e.method,t=e.splitKey,a=void 0===t?"+":t;u(e.key).forEach(function(e){var t=e.split(a),n=t.length,o=t[n-1],r="*"===o?"*":m(o);if(g[r]){f||(f=b());var i=1<n?y(d,t):[];g[r]=g[r].map(function(e){return(!c||e.method===c)&&e.scope===f&&function(e,t){for(var n=e.length<t.length?t:e,o=e.length<t.length?e:t,r=!0,i=0;i<n.length;i++)~o.indexOf(n[i])||(r=!1);return r}(e.mods,i)?{}:e})}})}function O(e,t,n){var o;if(t.scope===n||"all"===t.scope){for(var r in o=0<t.mods.length,v)Object.prototype.hasOwnProperty.call(v,r)&&(!v[r]&&-1<t.mods.indexOf(+r)||v[r]&&!~t.mods.indexOf(+r))&&(o=!1);(0!==t.mods.length||v[16]||v[18]||v[17]||v[91])&&!o&&"*"!==t.shortcut||!1===t.method(e,t)&&(e.preventDefault?e.preventDefault():e.returnValue=!1,e.stopPropagation&&e.stopPropagation(),e.cancelBubble&&(e.cancelBubble=!0))}}function K(n){var e=g["*"],t=n.keyCode||n.which||n.charCode;if(x.filter.call(this,n)){if(93!==t&&224!==t||(t=91),~w.indexOf(t)||229===t||w.push(t),["ctrlKey","altKey","shiftKey","metaKey"].forEach(function(e){var t=h[e];n[e]&&!~w.indexOf(t)?w.push(t):!n[e]&&-1<w.indexOf(t)&&w.splice(w.indexOf(t),1)}),t in v){for(var o in v[t]=!0,d)d[o]===t&&(x[o]=!0);if(!e)return}for(var r in v)Object.prototype.hasOwnProperty.call(v,r)&&(v[r]=n[h[r]]);var i=b();if(e)for(var f=0;f<e.length;f++)e[f].scope===i&&("keydown"===n.type&&e[f].keydown||"keyup"===n.type&&e[f].keyup)&&O(n,e[f],i);if(t in g)for(var c=0;c<g[t].length;c++)if(("keydown"===n.type&&g[t][c].keydown||"keyup"===n.type&&g[t][c].keyup)&&g[t][c].key){for(var a=g[t][c],l=a.key.split(a.splitKey),s=[],p=0;p<l.length;p++)s.push(m(l[p]));s.sort().join("")===w.sort().join("")&&O(n,a,i)}}}function x(e,t,n){w=[];var o=u(e),r=[],i="all",f=document,c=0,a=!1,l=!0,s="+";for(void 0===n&&"function"==typeof t&&(n=t),"[object Object]"===Object.prototype.toString.call(t)&&(t.scope&&(i=t.scope),t.element&&(f=t.element),t.keyup&&(a=t.keyup),void 0!==t.keydown&&(l=t.keydown),"string"==typeof t.splitKey&&(s=t.splitKey)),"string"==typeof t&&(i=t);c<o.length;c++)r=[],1<(e=o[c].split(s)).length&&(r=y(d,e)),(e="*"===(e=e[e.length-1])?"*":m(e))in g||(g[e]=[]),g[e].push({keyup:a,keydown:l,scope:i,mods:r,shortcut:o[c],method:n,key:o[c],splitKey:s});void 0!==f&&!function(e){return-1<k.indexOf(e)}(f)&&window&&(k.push(f),p(f,"keydown",function(e){K(e)}),p(window,"focus",function(){w=[]}),p(f,"keyup",function(e){K(e),function(e){var t=e.keyCode||e.which||e.charCode,n=w.indexOf(t);if(n<0||w.splice(n,1),e.key&&"meta"==e.key.toLowerCase()&&w.splice(0,w.length),93!==t&&224!==t||(t=91),t in v)for(var o in v[t]=!1,d)d[o]===t&&(x[o]=!1)}(e)}))}var r={setScope:i,getScope:b,deleteScope:function(e,t){var n,o;for(var r in e||(e=b()),g)if(Object.prototype.hasOwnProperty.call(g,r))for(n=g[r],o=0;o<n.length;)n[o].scope===e?n.splice(o,1):o++;b()===e&&i(t||"all")},getPressedKeyCodes:function(){return w.slice(0)},isPressed:function(e){return"string"==typeof e&&(e=m(e)),!!~w.indexOf(e)},filter:function(e){var t=e.target||e.srcElement,n=t.tagName,o=!0;return!t.isContentEditable&&"TEXTAREA"!==n&&("INPUT"!==n&&"TEXTAREA"!==n||t.readOnly)||(o=!1),o},unbind:function(e){if(e){if(Array.isArray(e))e.forEach(function(e){e.key&&c(e)});else if("object"===f(e))e.key&&c(e);else if("string"==typeof e){for(var t=arguments.length,n=Array(1<t?t-1:0),o=1;o<t;o++)n[o-1]=arguments[o];var r=n[0],i=n[1];"function"==typeof r&&(i=r,r=""),c({key:e,scope:r,method:i,splitKey:"+"})}}else Object.keys(g).forEach(function(e){return delete g[e]})}};for(var a in r)Object.prototype.hasOwnProperty.call(r,a)&&(x[a]=r[a]);if("undefined"!=typeof window){var l=window.hotkeys;x.noConflict=function(e){return e&&window.hotkeys===x&&(window.hotkeys=l),x},window.hotkeys=x}return x});
\ No newline at end of file
diff --git a/package-lock.json b/package-lock.json
index dea4f318..a7376c0b 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "hotkeys-js",
-  "version": "3.7.1",
+  "version": "3.7.2",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/package.json b/package.json
index 6fe1b411..7680a121 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "hotkeys-js",
   "description": "A simple micro-library for defining and dispatching keyboard shortcuts. It has no dependencies.",
-  "version": "3.7.1",
+  "version": "3.7.2",
   "main": "index.js",
   "types": "index.d.ts",
   "module": "dist/hotkeys.esm.js",