做日结活的网站/热搜榜排名今日第一

Vant-list的二次封装

场景：在写项目需求的时候，移动端有用到vant-list组件。后续需求更新说要对列表数据页加搜索和筛选的功能。发现每次筛选完得在页面内手动重置一次查询参数。不方便，所以封了一层。

二次封装代码

<template><van-listv-model:loading="loading":finished="finished"@load="handleLoad"><div :class="listClass"><slotv-for="item in listData":key="item.id"v-bind="item"/></div><div v-if="loadOnce && !listData?.length" class="layout-list__empty">暂无数据</div></van-list>
</template><script setup>
const props = defineProps({request: {},listClass: {},pageSize: {type: Number,default: 10,},
});const listData = ref([]);
const loading = ref(false);
const finished = ref(false);
const loadOnce = ref(false);let pageNum = 0;
let requesting = false;const handleLoad = async () => {if (requesting || unref(finished)) { return }requesting = true;++pageNum;const formContent = {page: pageNum,pageSize: props.pageSize,};const { total, data } = await props.request(formContent);unref(listData).push(...data);loadOnce.value = true;if (!unref(listData).length || unref(listData).length >= total) {finished.value = true;}loading.value = false;requesting = false;
};const resetSearch = () => {listData.value = [];loading.value = false;finished.value = false;loadOnce.value = false;pageNum = 0;requesting = false;handleLoad();
};defineExpose({resetSearch,
});
</script><style lang="scss" scoped>
.layout-list {&__empty {padding: 12px 0;color: #666;text-align: center;}
}
</style>

组件使用

<mb-search@updated-search="updatedSearch"
/>
<mb-listref="mbListRef"v-slot="item":request="getList(() => (loadForm))"
><div>内容</div>
</mb-list><script setup>
import { getList } from '@/services/activiti/instance';defineProps({selectTypeList: {type: Array,default: () => [],},
});
const mbListRef = ref();const loadForm = ref({title: '',defName: '',instStatus: 'running',
});function updatedSearch(title) {loadForm.value.title = title;mbListRef.value.resetSearch();
}</script>