vue一次加载大量数据导致页面卡顿解决
前提:后端返回一个几千条的数组,页面直接渲染导致非常卡顿。
解决方案:使用vue-virtual-scroller 插件解决;https://www.npmjs.com/package/vue-virtual-scroller#page-mode
第一步:安装
npm install --save vue-virtual-scroller
第二步:引入(也可以局部引入)
import "vue-virtual-scroller/dist/vue-virtual-scroller.css";import virtualScroller from "vue-virtual-scroller";
Vue.use(virtualScroller);
第三步:页面使用
<!-- 明细列表部分 --><div class="list_count" style="height:400px;">
<RecycleScroller v-if="invoiceListflag" :items="invoiceList" :emitUpdate="true" class="scroller" :item-size="49" key-field="idKey" >
<template slot="before">
<div class="thead">
<div class="tr">
<span class="td" v-for="(itemsa,indexsa) in tableTitle" :key="indexsa+'title'" :class="{'width200':indexsa ==1|| indexsa ==2}">{{itemsa.title}}</span>
</div>
</div>
</template>
<template v-slot="{ item,index }">
<div class="tbody">
<div class="tr" :key="index+'asdsds'">
<span class="td">{{item.id}}</span>
<span class="td width200">
<el-select v-model="item.invoiceType" style="width:156px;" placeholder="请选择" @change="changeType(item,item.id,1)">
<span slot="prefix" :class="{'zhuan':item.invoiceType == '00','pu':item.invoiceType =='02'}"></span>
<el-option
v-for="items in options"
:key="items.value"
:label="items.invoiceTypeName"
:value="items.invoiceType">
</el-option>
</el-select>
</span>
<span class="td width200">
<el-select v-model="item.goodsName" style="width:156px;" placeholder="请选择" @change="changeType(item,item.id,2)">
<el-option
v-for="items in opParams[item.invoiceType]"
:key="items.goodsName+'asd'+Math.random()"
:label="items.goodsName"
:value="items.goodsName">
</el-option>
</el-select>
</span>
<span class="td">{{item.invoiceEditionDesc}}</span>
<span class="td">{{item.goodsQuantity}}</span>
<span class="td">{{item.goodsPrice}}</span>
<span class="td">{{item.goodsAmount}}</span>
<span class="td">{{item.taxRate}}%</span>
<span class="td">{{item.goodsTax}}</span>
<span class="td" >
<el-input-number class="inputWidth" :class="{'errorColor':changeErrorColor(item)}" :min="0" controls-position="right" v-model="item.taxAmount" @change="checkPrice(item,item.id)" placeholder="请输入金额"></el-input-number>
<span v-if="changeErrorColor(item)"></span>
</span>
<span class="td"><span v-if="invoiceList.length>1" class="del" @click="delList(item,item.id)">删除</span></span>
</div>
</div>
</template>
<!-- </tbody>
</table> -->
</RecycleScroller>
</div>
View Code
<style lang='css'>.scroller {
height: 100%;
}
.user {
height: 32%;
padding: 0 12px;
display: flex;
align-items: center;
}
.invoiceAdd__detail_warp .list_count .vue-recycle-scroller__item-wrapper {
overflow: initial;
}
.invoiceAdd__detail_warp .list_count .vue-recycle-scroller.ready.direction-vertical .vue-recycle-scroller__item-view {
width: inherit;
}
</style>
View Code
备注:
1:父元素一定要设置高度;
2:key-field="idKey"//key-field 默认是id属性这里一定要传递一个不重复的值进行区分;
3::item-size="49" //是每一条数据的高度
4:items //数组列表
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