这个问题是因为组件层级太低
<z-paging ref="paging" v-model="dataList" @query="queryList" auto-show-back-to-top :empty-view-z-index="9999" class="paging">
<view slot="top">
<view class="topContent">
<u-radio-group v-model="field">
<u-radio @change="radioChange" v-for="(item, index) in rbLists" :key="index" :name="item.name"
style="z-index: 99999;">
{{item.label}}
</u-radio>
</u-radio-group>
</view>
</view>
<goods-card :cartLists="dataList" />
</z-paging>
给组件设置高层级就好了