修改

app.js

@@ -14,8 +14,8 @@ App({
   //全局数据
   globalData: {
     //domain:'http://id24iu.natappfree.cc',
-    domain:"http://dd2.ubainsyun.com",
    //domain: "http://zhenglide.natapp1.cc" ,
+    domain:"http://dd2.ubainsyun.com",
     corpId: '',
     userId:'',
     person:'',

pages/conference/ex_visitor/ex_visitor.axml

@@ -24,12 +24,15 @@
 </form>
 <scroll-view scroll-y="{{true}}">
     
+       
         <view  a:for="{{signList}}" a:for-item="sign" a:for-index="index" class='item-avatar-xs-a'>
               <!-- <checkbox value="{{employee.name}}" checked="{{employee.checked}}" /> -->
+                           
             <view data-index="{{index}}" data-id="{{index }}" onTap="deleteSign" class="del">                
                  <icon  type="cancel" size="18" color="red"/>
             </view>
 
+            
               <text class="checkbox-text">{{sign.signName}}</text>
         </view>