<view class='page-container-classname' ref='saveChildRef0'>
  <demo-block title='基础用法' ref='saveChildRef1'>
    <van-nav-bar title='标题' right-text='按钮' left-arrow=" " onClick-left='onClickLeft' onClick-right='onClickRight' ref='saveChildRef2'>
    </van-nav-bar>
  </demo-block>
  <demo-block title='高级用法' ref='saveChildRef3'>
    <van-nav-bar title='标题' left-text='返回' left-arrow=" " ref='saveChildRef4'>
      <van-icon name='search' slot='right' custom-class='icon' size='18' ref='saveChildRef5'>
      </van-icon>
    </van-nav-bar>
  </demo-block>
</view>