refactor: add eslint-plugin-vue && lint code (#976)

src/views/example/components/Dropdown/Comment.vue

@@ -1,11 +1,11 @@
 <template>
-  <el-dropdown trigger="click" :show-timeout="100">
-    <el-button plain>{{!comment_disabled?'评论已打开':'评论已关闭'}}
-      <i class="el-icon-caret-bottom el-icon--right"></i>
+  <el-dropdown :show-timeout="100" trigger="click">
+    <el-button plain>{{ !comment_disabled?'评论已打开':'评论已关闭' }}
+      <i class="el-icon-caret-bottom el-icon--right"/>
     </el-button>
-    <el-dropdown-menu class="no-padding" slot="dropdown">
+    <el-dropdown-menu slot="dropdown" class="no-padding">
       <el-dropdown-item>
-        <el-radio-group style="padding: 10px;" v-model="comment_disabled">
+        <el-radio-group v-model="comment_disabled" style="padding: 10px;">
           <el-radio :label="true">关闭评论</el-radio>
           <el-radio :label="false">打开评论</el-radio>
         </el-radio-group>
@@ -16,7 +16,12 @@
 
 <script>
 export default {
-  props: ['value'],
+  props: {
+    value: {
+      type: Boolean,
+      default: false
+    }
+  },
   computed: {
     comment_disabled: {
       get() {