时间控件滚动调慢

package.json

@@ -19,7 +19,7 @@
     "less-loader": "^4.1.0",
     "lib-flexible": "^0.3.2",
     "portal-vue": "^2.1.6",
-    "vant": "^2.2.0",
+    "vant": "^2.2.10",
     "vue": "^2.5.2",
     "vue-photo-preview": "^1.1.3",
     "vue-router": "^3.0.1",

src/common/Picker.vue

@@ -6,6 +6,7 @@
           <van-picker
             :columns="columns"
             :visible-item-count='3'
+            :swipe-duration="100"
             @change="handlechange"
           />
           <div class="confBtn">
@@ -15,7 +16,7 @@
         </div>
       <div class="mask" @click="onCancel"></div>
       </div>
-  </portal> 
+  </portal>
 </template>
 <script type="text/javascript">
   import $ from 'jquery';
@@ -133,4 +134,4 @@
       z-index: 999;
     }
   }
-</style>
+</style>