<view class='nav' catchtap='navigate_auth_native' data-url='{{item.url}}'>
  <image class='nav-icon' src='/images/{{item.icon}}.png' mode="widthFix" />
  <view class='nav-content'>
    <text>{{item.title}}</text>
    <image src='/images/jiantou.png'></image>
  </view>
</view>