虚拟列表 Virtual ​

<template>
	<tm-app>
		<tm-sheet>
			<tm-text
				:font-size="30"
				_class="text-weight-b"
				label="基础示例,更多见文档，以下是展示你可以无限加载图片列表，你将看不到任何卡顿或者阻塞。超高性能的虚拟列表。"
			></tm-text>
			<tm-divider></tm-divider>
			<view class="flex flex-col flex-col-top-center">
				<tm-virtual-list :scrollViewInTo="test" :load="getdata" :width="626" :height="900" :data="imglist" :itemHeight="160">
					<template v-slot:default="{ data }">
						<tm-sheet
							:border="1"
							borderDirection="bottom"
							:height="160"
							:width="626"
							_class="flex flex-row flex-row-center-start"
							:padding="[0, 0]"
							:margin="[0, 0]"
							v-for="(item, index) in data"
							:key="index"
						>
							<view class="flex flex-row flex-row-center-between flex-1">
								<tm-image :width="200" :height="100" :src="item.src"></tm-image>
								<tm-text :label="'image-Row-' + item.index"></tm-text>
							</view>
						</tm-sheet>
					</template>
				</tm-virtual-list>
			</view>
		</tm-sheet>
	</tm-app>
</template>
<script lang="ts" setup>
import { ref } from 'vue'
import { onShow, onLoad } from '@dcloudio/uni-app'
import tmApp from '@/tmui/components/tm-app/tm-app.vue'
import tmSheet from '@/tmui/components/tm-sheet/tm-sheet.vue'
import tmText from '@/tmui/components/tm-text/tm-text.vue'
import tmImageGroup from '@/tmui/components/tm-image-group/tm-image-group.vue'
import tmImage from '@/tmui/components/tm-image/tm-image.vue'
import tmVirtualList from '@/tmui/components/tm-virtual-list/tm-virtual-list.vue'
import tmDivider from '@/tmui/components/tm-divider/tm-divider.vue'
const imglist = ref([])
const test = ref("")
const getdata = (e: string) => {
	return new Promise((res, rej) => {
		setTimeout(function () {
			if (e == 'top') {
				imglist.value = []
				for (let i = 0; i < 10; i++) {
					imglist.value.push({ src: 'https://i0.pickpik.com/photos/298/434/513/beach-dawn-dusk-ocean-thumb.jpg', index: i })
				}
			} else if (e == 'bottom') {
				let len = imglist.value.length
				for (let i = len; i < 10 + len; i++) {
					imglist.value.push({ src: 'https://i0.pickpik.com/photos/298/434/513/beach-dawn-dusk-ocean-thumb.jpg', index: i })
				}
			}
			res(true)
		}, 2500)
	})
}


</script>