diff --git a/app/db.sqlite3 b/app/db.sqlite3
index 7bf9ba88..fd423129 100644
Binary files a/app/db.sqlite3 and b/app/db.sqlite3 differ
diff --git a/app/server/package-lock.json b/app/server/package-lock.json
index 33ed639e..bb5a41ec 100644
--- a/app/server/package-lock.json
+++ b/app/server/package-lock.json
@@ -4012,9 +4012,9 @@
       }
     },
     "vue-shortkey": {
-      "version": "3.1.5",
-      "resolved": "https://registry.npmjs.org/vue-shortkey/-/vue-shortkey-3.1.5.tgz",
-      "integrity": "sha512-tva1QsEbEO0Qc4N62ODSophFB4LszwQZzwEn9VaB3uchIJ0wsfVX8zSYi1OkFOuY/MsodDoC/YbbHlwINl27gA==",
+      "version": "3.1.6",
+      "resolved": "https://registry.npmjs.org/vue-shortkey/-/vue-shortkey-3.1.6.tgz",
+      "integrity": "sha512-Nh5cwN86rfNCKINVi16OzN/iVPLvhk1yvVZD8h8E34WlzDRtdm+dngUjfsedz30+Eebbr6c444TmLLIrKqzW9g==",
       "requires": {
         "vue": "2.5.16"
       }
diff --git a/app/server/package.json b/app/server/package.json
index e1ed08ec..c4986a15 100644
--- a/app/server/package.json
+++ b/app/server/package.json
@@ -11,7 +11,7 @@
   "dependencies": {
     "vue": "^2.5.16",
     "vue-loader": "^15.2.4",
-    "vue-shortkey": "^3.1.5"
+    "vue-shortkey": "^3.1.6"
   },
   "devDependencies": {
     "webpack": "^4.12.0",
diff --git a/app/server/static/js/http.js b/app/server/static/js/http.js
new file mode 100644
index 00000000..e80cc13a
--- /dev/null
+++ b/app/server/static/js/http.js
@@ -0,0 +1,8 @@
+axios.defaults.xsrfCookieName = 'csrftoken';
+axios.defaults.xsrfHeaderName = 'X-CSRFToken';
+var base_url = window.location.href.split('/').slice(3, 5).join('/');
+let HTTP = axios.create({
+    baseURL: `/api/${base_url}/`
+});
+
+export default HTTP;
\ No newline at end of file
diff --git a/app/server/static/js/mixin.js b/app/server/static/js/mixin.js
new file mode 100644
index 00000000..531c3321
--- /dev/null
+++ b/app/server/static/js/mixin.js
@@ -0,0 +1,102 @@
+import HTTP from './http.js';
+
+var annotationMixin = {
+    data: function () {
+        return {
+            cur: 0,
+            items: [{
+                id: null,
+                text: '',
+                labels: []
+            }],
+            labels: [],
+            guideline: 'Here is the Annotation Guideline Text',
+            total: 0,
+            remaining: 0,
+            searchQuery: '',
+            url: '',
+        }
+    },
+    methods: {
+        nextPage: async function () {
+            this.cur += 1;
+            if (this.cur == this.items.length) {
+                if (this.next) {
+                    this.url = this.next;
+                    await this.search();
+                    this.cur = 0;
+                } else {
+                    this.cur = this.items.length - 1;
+                }
+            }
+            this.showMessage(this.cur);
+        },
+        prevPage: async function () {
+            this.cur -= 1;
+            if (this.cur == -1) {
+                if (this.prev) {
+                    this.url = this.prev;
+                    await this.search();
+                    this.cur = this.items.length - 1;
+                } else {
+                    this.cur = 0;
+                }
+            }
+            this.showMessage(this.cur);
+        },
+        search: async function () {
+            await HTTP.get(this.url).then(response => {
+                this.items = response.data['results'];
+                this.next = response.data['next'];
+                this.prev = response.data['previous'];
+            })
+        },
+        showMessage: function (index) {
+            this.cur = index;
+        },
+        submit: async function () {
+            this.url = `docs/?q=${this.searchQuery}`;
+            await this.search();
+            this.cur = 0;
+        },
+        updateProgress: function () {
+            HTTP.get('progress').then(response => {
+                this.total = response.data['total'];
+                this.remaining = response.data['remaining'];
+            })
+        },
+        deleteLabel: async function (index) {
+            var doc_id = this.items[this.cur].id;
+            var annotation_id = this.items[this.cur]['labels'][index].id;
+            HTTP.delete(`docs/${doc_id}/annotations/${annotation_id}`).then(response => {
+                this.items[this.cur]['labels'].splice(index, 1)
+            });
+            this.updateProgress();
+        }
+    },
+    created: function () {
+        HTTP.get('labels').then(response => {
+            this.labels = response.data
+        });
+        this.updateProgress();
+        this.submit();
+    },
+    computed: {
+        achievement: function () {
+            var done = this.total - this.remaining;
+            var percentage = Math.round(done / this.total * 100);
+            return this.total > 0 ? percentage : 0;
+        },
+        progressColor: function () {
+            if (this.achievement < 30) {
+                return 'is-danger'
+            } else if (this.achievement < 70) {
+                return 'is-warning'
+            } else {
+                return 'is-primary'
+            }
+        }
+    }
+};
+
+export default annotationMixin;
\ No newline at end of file
diff --git a/app/server/static/js/sequence_labeling.js b/app/server/static/js/sequence_labeling.js
index 2f08ec12..38f42506 100644
--- a/app/server/static/js/sequence_labeling.js
+++ b/app/server/static/js/sequence_labeling.js
@@ -1,14 +1,9 @@
-//import Vue from 'vue';
-//Vue.use(require('vue-shortkey'));
+import Vue from 'vue';
+Vue.use(require('vue-shortkey'));
+import annotationMixin from './mixin.js';
+import HTTP from './http.js';
 
-axios.defaults.xsrfCookieName = 'csrftoken';
-axios.defaults.xsrfHeaderName = 'X-CSRFToken';
-var base_url = window.location.href.split('/').slice(3, 5).join('/');
-const HTTP = axios.create({
-    baseURL: `/api/${base_url}/`
-})
-
-const Annotator = {
+Vue.component('annotator', {
     template: '<div @click="setSelectedRange">\
                    <span v-for="r in chunks" v-bind:class="{tag: r.color}" v-bind:style="{ color: r.color, backgroundColor: r.background }">{{ r.word }}<button v-if="r.color" class="delete is-small" @click="deleteLabel(r.index)"></button></span>\
                </div>',
@@ -75,14 +70,14 @@ const Annotator = {
             this.entityPositions.splice(index, 1)
         },
         getBackgroundColor: function (label_id) {
-            for (item of this.labels) {
+            for (var item of this.labels) {
                 if (item.id == label_id) {
                     return item.background_color
                 }
             }
         },
         getTextColor: function (label_id) {
-            for (item of this.labels) {
+            for (var item of this.labels) {
                 if (item.id == label_id) {
                     return item.text_color
                 }
@@ -101,7 +96,9 @@ const Annotator = {
         chunks: function () {
             var res = [];
             var left = 0;
-            for (let [i, e] of this.sortedEntityPositions.entries()) {
+            var i = 0;
+            for (let i in this.sortedEntityPositions) {
+                var e = this.sortedEntityPositions[i];
                 var text = this.text.slice(left, e['start_offset']);
                 res.push({
                     'word': text,
@@ -130,113 +127,11 @@ const Annotator = {
             return res
         }
     }
-}
-
-var annotationMixin = {
-    data: function () {
-        return {
-            cur: 0,
-            items: [{
-                id: null,
-                text: '',
-                labels: []
-            }],
-            labels: [],
-            guideline: 'Here is the Annotation Guideline Text',
-            total: 0,
-            remaining: 0,
-            searchQuery: '',
-            url: '',
-        }
-    },
-    methods: {
-        nextPage: async function () {
-            this.cur += 1;
-            if (this.cur == this.items.length) {
-                if (this.next) {
-                    this.url = this.next;
-                    await this.search();
-                    this.cur = 0;
-                } else {
-                    this.cur = this.items.length - 1;
-                }
-            }
-            this.showMessage(this.cur);
-        },
-        prevPage: async function () {
-            this.cur -= 1;
-            if (this.cur == -1) {
-                if (this.prev) {
-                    this.url = this.prev;
-                    await this.search();
-                    this.cur = this.items.length - 1;
-                } else {
-                    this.cur = 0;
-                }
-            }
-            this.showMessage(this.cur);
-        },
-        search: async function () {
-            await HTTP.get(this.url).then(response => {
-                this.items = response.data['results'];
-                this.next = response.data['next'];
-                this.prev = response.data['previous'];
-            })
-        },
-        showMessage: function (index) {
-            this.cur = index;
-        },
-        submit: async function () {
-            this.url = `docs/?q=${this.searchQuery}`;
-            await this.search();
-            this.cur = 0;
-        },
-        updateProgress: function () {
-            HTTP.get('progress').then(response => {
-                this.total = response.data['total'];
-                this.remaining = response.data['remaining'];
-            })
-        },
-        deleteLabel: async function (index) {
-            var doc_id = this.items[this.cur].id;
-            var annotation_id = this.items[this.cur]['labels'][index].id;
-            HTTP.delete(`docs/${doc_id}/annotations/${annotation_id}`).then(response => {
-                this.items[this.cur]['labels'].splice(index, 1)
-            });
-            this.updateProgress();
-        }
-    },
-    created: function () {
-        HTTP.get('labels').then(response => {
-            this.labels = response.data
-        });
-        this.updateProgress();
-        this.submit();
-    },
-    computed: {
-        achievement: function () {
-            var done = this.total - this.remaining;
-            var percentage = Math.round(done / this.total * 100);
-            return this.total > 0 ? percentage : 0;
-        },
-        progressColor: function () {
-            if (this.achievement < 30) {
-                return 'is-danger'
-            } else if (this.achievement < 70) {
-                return 'is-warning'
-            } else {
-                return 'is-primary'
-            }
-        }
-    }
-}
+})
 
 var vm = new Vue({
     el: '#mail-app',
     delimiters: ['[[', ']]'],
-    components: {
-        'annotator': Annotator,
-    },
     mixins: [annotationMixin],
     methods: {
         annotate: function (label_id) {
diff --git a/app/server/templates/annotation/sequence_labeling.html b/app/server/templates/annotation/sequence_labeling.html
index 982ca62f..7f07d081 100644
--- a/app/server/templates/annotation/sequence_labeling.html
+++ b/app/server/templates/annotation/sequence_labeling.html
@@ -1,13 +1,6 @@
 {% extends "annotation/annotation_base.html" %}
 {% load static %}
 
-<div class="control">
-<div class="tags has-addons">
-    <span class="tag is-dark">npm</span>
-    <span class="tag is-info">0.5.0</span>
-</div>
-</div>
-
 {% block annotation-area %}
 <div class="card">
     <header class="card-header">
@@ -17,7 +10,7 @@
                     <div class="tags has-addons">
                         <a class="tag is-medium"
                         v-bind:style="{ color: label.text_color, backgroundColor: label.background_color }"
-                        v-on:click="annotate(label.id)">
+                        v-on:click="annotate(label.id)" v-shortkey.once="['ctrl', [[ label.shortcut ]] ]" @shortkey="annotate(label.id)">
                         [[ label.text ]]
                         </a>
                         <span class="tag is-medium">[[ label.shortcut ]]</span>
@@ -28,12 +21,16 @@
     </header>
     <div class="card-content">
         <div class="content">
-            <annotator ref="annotator" v-bind:labels="labels" v-bind:entity-positions="items[cur].labels.slice()" v-bind:text="items[cur].text" @delete-label="deleteLabel"></annotator>
+            <annotator ref="annotator"
+                       v-bind:labels="labels"
+                       v-bind:entity-positions="items[cur].labels.slice()"
+                       v-bind:text="items[cur].text"
+                       @delete-label="deleteLabel"></annotator>
         </div>
     </div>
 </div>
 {% endblock %}
 
 {% block footer %}
-<script type="text/javascript" src="{% static 'js/sequence_labeling.js' %}"></script>
+<script type="text/javascript" src="{% static 'dist/sequence_labeling.js' %}"></script>
 {% endblock %}
\ No newline at end of file
diff --git a/app/server/webpack.config.js b/app/server/webpack.config.js
index 7017a2a1..ef37dd95 100644
--- a/app/server/webpack.config.js
+++ b/app/server/webpack.config.js
@@ -1,23 +1,29 @@
 const VueLoaderPlugin = require('vue-loader/lib/plugin')
 
-    module.exports = {
+module.exports = {
+    mode: 'development',
+    entry: {
+        'sequence_labeling': './static/js/sequence_labeling.js'
+    },
+    output: {
+        path: __dirname + '/static/dist',
+        filename: '[name].js'
+    },
     module: {
-	rules: [
-		// ... other rules
-{
-    test: /\.vue$/,
-    loader: 'vue-loader'
-}
-    ]
+        rules: [
+            {
+                test: /\.vue$/,
+                loader: 'vue-loader'
+            }
+        ]
     },
     plugins: [
-	      // make sure to include the plugin!
-	      new VueLoaderPlugin()
-	      ],
+        new VueLoaderPlugin()
+    ],
     resolve: {
-	extensions: ['.js', '.vue'],
-	alias: {
-	    vue$: 'vue/dist/vue.esm.js', //webpack使う場合はこっちを指定する https://jp.vuejs.org/v2/guide/installation.html#%E7%94%A8%E8%AA%9E
-	},
+        extensions: ['.js', '.vue'],
+        alias: {
+            vue$: 'vue/dist/vue.esm.js',
+        },
     },
 }
\ No newline at end of file