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

<form catchsubmit="submit">

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

  <van-cell-group title="通话音量">
    <view class="slider">
      <slider name="phoneVol" value="{{set.phoneVol}}" show-value activeColor="#5D88FF" block-size="20" max="6" />
    </view>
  </van-cell-group>

  <van-cell-group title="系统音量">
    <view class="slider">
      <slider name="msgVol" value="{{set.msgVol}}" show-value activeColor="#5D88FF" block-size="20" max="6" />
    </view>
  </van-cell-group>

  <van-cell-group title="铃声音量">
    <view class="slider">
      <slider name="ringVol" value="{{set.ringVol}}" show-value activeColor="#5D88FF" block-size="20" max="6" />
    </view>
  </van-cell-group>

</form>