vxe-table v4.8+ 与 v3.10+ 虚拟滚动支持动态行高，虚拟渲染更快了

Vxe UI vue vxe-table v4.8+ 与 v3.10+ 解决了老版本虚拟滚动不支持动态行高的问题，重构了虚拟渲染，渲染性能大幅提升了，行高自适应和列宽拖动都支持，大幅降低虚拟渲染过程中的滚动白屏，大量数据列表滚动更加流畅。

自适应行高

如果不需要自适应行高，可以通过 show-overflow=false 关闭自适应行高，渲染性能将更快。

<template><div><vxe-button @click="loadData(5000)">加载5k条</vxe-button><vxe-button @click="loadData(10000)">加载1w条</vxe-button><vxe-button @click="loadData(50000)">加载5w条</vxe-button><vxe-grid v-bind="gridOptions"></vxe-grid></div>
</template><script setup>
import { reactive, nextTick } from 'vue'
import { VxeUI } from 'vxe-table'
const imgUrlCellRender = reactive({name: 'VxeImage',props: {width: 36,height: 36}
})
const gridOptions = reactive({border: true,loading: false,height: 800,columnConfig: {resizable: true},scrollY: {enabled: true,gt: 0},columns: [{ type: 'checkbox', width: 60 },{ title: '列0', field: 'col0', width: 100 },{ title: '列1', field: 'imgUrl', width: 80, cellRender: imgUrlCellRender },{ title: '列2', field: 'col2', width: 90 },{ title: '列3', field: 'col3', width: 200 },{ title: '列4', field: 'col4', width: 140 },{ title: '列5', field: 'col5', width: 300 },{ title: '列6', field: 'col6', width: 160 },{ title: '列7', field: 'col7', width: 120 },{ title: '列8', field: 'col8' }],data: []
})
// 模拟行数据
const loadData = (rowSize) => {gridOptions.loading = truesetTimeout(() => {const dataList = []for (let i = 0; i < rowSize; i++) {const item = {id: 10000 + i,imgUrl: i % 3 === 0 ? 'https://vxeui.com/resource/img/546.gif' : 'https://vxeui.com/resource/img/673.gif'}for (let j = 0; j < 10; j++) {if (i % 8 === 0) {item[`col${j}`] = `值_${i}_${j} 内容8内容8内容8内容8`} else if (i % 7 === 0) {item[`col${j}`] = `值_${i}_${j} 内容7内容7`} else if (i % 6 === 0) {item[`col${j}`] = `值_${i}_${j} 内容6内容6内容6内容6内容6内容6内容6内容6`} else if (i % 5 === 0) {item[`col${j}`] = `值_${i}_${j} 内容5内容5内容5内容5内容5`} else if (i % 4 === 0) {item[`col${j}`] = `值_${i}_${j} 内容4内容4内容4内容4内容4内容4内容4内容4内容4内容4内容4内容4`} else {item[`col${j}`] = `值_${i}_${j}`}}dataList.push(item)}const startTime = Date.now()gridOptions.data = dataListgridOptions.loading = falsenextTick(() => {VxeUI.modal.message({content: `加载时间 ${Date.now() - startTime} 毫秒`,status: 'success'})})}, 350)
}
loadData(200)</script>

固定行高

<template><div><vxe-button @click="loadData(5000)">加载5k条</vxe-button><vxe-button @click="loadData(10000)">加载1w条</vxe-button><vxe-button @click="loadData(50000)">加载5w条</vxe-button><vxe-grid v-bind="gridOptions"><template #action><vxe-button mode="text" status="primary">按钮1</vxe-button><vxe-button mode="text" status="error">按钮2</vxe-button></template></vxe-grid></div>
</template><script setup>
import { reactive, nextTick } from 'vue'
import { VxeUI } from 'vxe-table'
const flag1CellRender = reactive({name: 'VxeSwitch'
})
const imgUrlCellRender = reactive({name: 'VxeImage',props: {width: 36,height: 36}
})
const imgList1CellRender = reactive({name: 'VxeUpload',props: {mode: 'image',readonly: true,moreConfig: {maxCount: 2},imageStyle: {width: 40,height: 40}}
})
const gridOptions = reactive({border: true,showOverflow: true,showHeaderOverflow: true,showFooterOverflow: true,loading: false,height: 800,columnConfig: {resizable: true},scrollX: {enabled: true,gt: 0},scrollY: {enabled: true,gt: 0,mode: 'wheel'},columns: [{ type: 'checkbox', width: 60, fixed: 'left' },{ title: '列0', field: 'col0', width: 100, fixed: 'left' },{ title: '列1', field: 'imgUrl', width: 80, fixed: 'left', cellRender: imgUrlCellRender },{ title: '列2', field: 'col2', width: 90 },{ title: '列3', field: 'col3', width: 200 },{ title: '列4', field: 'col4', width: 140 },{ title: '列5', field: 'col5', width: 300 },{ title: '列6', field: 'col6', width: 160 },{ title: '列7', field: 'col7', width: 120 },{ title: '列8', field: 'col8', width: 400 },{ title: '列9', field: 'col9', width: 160 },{ title: '列10', field: 'col10', width: 160 },{ title: '列11', field: 'col11', width: 180 },{ title: '列12', field: 'col12', width: 160 },{ title: '列13', field: 'col13', width: 80 },{ title: '列14', field: 'col14', width: 120 },{ title: '列15', field: 'col15', width: 360 },{ title: '列16', field: 'col16', width: 150 },{ title: '列17', field: 'col17', width: 380 },{ title: '列18', field: 'col18', width: 100 },{ title: '列19', field: 'col19', width: 290 },{ title: '列20', field: 'col20', width: 80 },{ title: '列21', field: 'col21', width: 100 },{ title: '列22', field: 'col22', width: 120 },{ title: '列23', field: 'col23', width: 270 },{ title: '列24', field: 'col24', width: 330 },{ title: '列25', field: 'col25', width: 460 },{ title: '列26', field: 'col26', width: 280 },{ title: '列27', field: 'col27', width: 220 },{ title: '列28', field: 'col28', width: 120 },{ title: '列29', field: 'col29', width: 180 },{ title: '列30', field: 'col30', width: 500 },{ title: '列31', field: 'col31', width: 600 },{ title: '列32', field: 'col32', width: 100 },{ title: '列33', field: 'col33', width: 490 },{ title: '列34', field: 'col34', width: 100 },{ title: '列35', field: 'col35', width: 150 },{ title: '列36', field: 'col36', width: 800 },{ title: '列37', field: 'col37', width: 400 },{ title: '列38', field: 'col38', width: 800 },{ title: '列39', field: 'col39', width: 360 },{ title: '列40', field: 'col40', width: 420 },{ title: '列41', field: 'col41', width: 100 },{ title: '列42', field: 'col42', width: 120 },{ title: '列43', field: 'col43', width: 280 },{ title: '列44', field: 'col44', width: 170 },{ title: '列45', field: 'col45', width: 370 },{ title: '列46', field: 'col46', width: 420 },{ title: '列47', field: 'col47', width: 170 },{ title: '列48', field: 'col48', width: 400 },{ title: '列49', field: 'col49', width: 220 },{ title: '列50', field: 'col50', width: 170 },{ title: '列51', field: 'col51', width: 160 },{ title: '列52', field: 'col52', width: 500 },{ title: '列53', field: 'col53', width: 280 },{ title: '列54', field: 'col54', width: 170 },{ title: '列55', field: 'col55', width: 370 },{ title: '列56', field: 'col56', width: 120 },{ title: '列57', field: 'col57', width: 170 },{ title: '列58', field: 'col58', width: 400 },{ title: '列59', field: 'col59', width: 220 },{ title: '列60', field: 'col60', width: 650 },{ title: '列61', field: 'col61', width: 600 },{ title: '列62', field: 'col62', width: 100 },{ title: '列63', field: 'col63', width: 490 },{ title: '列64', field: 'col64', width: 100 },{ title: '列65', field: 'col65', width: 150 },{ title: '列66', field: 'col66', width: 800 },{ title: '列67', field: 'col67', width: 400 },{ title: '列68', field: 'col68', width: 800 },{ title: '列69', field: 'col69', width: 360 },{ title: '列70', field: 'col70', width: 650 },{ title: '列71', field: 'col71', width: 600 },{ title: '列72', field: 'col72', width: 100 },{ title: '列73', field: 'col73', width: 490 },{ title: '列74', field: 'col74', width: 100 },{ title: '列75', field: 'col75', width: 150 },{ title: '列76', field: 'col76', width: 800 },{ title: '列77', field: 'col77', width: 400 },{ title: '列78', field: 'col78', width: 800 },{ title: '列79', field: 'col79', width: 360 },{ title: '列80', field: 'col80', width: 650 },{ title: '列81', field: 'col81', width: 600 },{ title: '列82', field: 'col82', width: 100 },{ title: '列83', field: 'col83', width: 490 },{ title: '列84', field: 'col84', width: 100 },{ title: '列85', field: 'col85', width: 150 },{ title: '列86', field: 'col86', width: 800 },{ title: '列87', field: 'col87', width: 400 },{ title: '列88', field: 'col88', width: 800 },{ title: '列89', field: 'col89', width: 360 },{ title: '列90', field: 'col90', width: 650 },{ title: '列91', field: 'col91', width: 600 },{ title: '列92', field: 'col92', width: 100 },{ title: '列93', field: 'col93', width: 490 },{ title: '列94', field: 'col94', width: 100 },{ title: '列95', field: 'col95', width: 150 },{ title: '列96', field: 'col96', width: 800 },{ title: '列97', field: 'col97', width: 400 },{ title: '列99', field: 'imgList1', width: 120, fixed: 'right', cellRender: imgList1CellRender },{ title: '列100', field: 'flag1', width: 100, fixed: 'right', cellRender: flag1CellRender },{ title: '操作', field: 'action', width: 140, fixed: 'right', slots: { default: 'action' } }],data: []
})
// 模拟行数据
const loadData = (rowSize) => {gridOptions.loading = truesetTimeout(() => {const dataList = []for (let i = 0; i < rowSize; i++) {const item = {id: 10000 + i,imgUrl: i % 3 === 0 ? 'https://vxeui.com/resource/img/546.gif' : 'https://vxeui.com/resource/img/673.gif',imgList1: i % 4 === 0? [{ name: 'fj577.jpg', url: 'https://vxeui.com/resource/img/fj577.jpg' }]: [{ name: 'fj573.jpeg', url: 'https://vxeui.com/resource/img/fj573.jpeg' },{ name: 'fj562.png', url: 'https://vxeui.com/resource/img/fj562.png' }],flag1: i % 5 === 0}for (let j = 0; j < 120; j++) {item[`col${j}`] = `值_${i}_${j}`}dataList.push(item)}const startTime = Date.now()gridOptions.data = dataListgridOptions.loading = falsenextTick(() => {VxeUI.modal.message({content: `加载时间 ${Date.now() - startTime} 毫秒`,status: 'success'})})}, 100)
}
loadData(200)</script>

github https://github.com/x-extends/vxe-table
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