omp-wx/pages/menu/other/other.wxml

<form bindsubmit="submit">

  <view class="btn-form-wapper">
    <van-button type="primary" custom-class="btn-form" form-type="submit">保存</van-button>
  </view>

  <van-field value="{{ gpsRate }}" name="gpsRate" label="定位频率" placeholder="小时" use-button-slot>
    <text slot="button">小时</text>
  </van-field>

</form>