VirtualScroll

虚拟滚动组件（用于大量数据纯展示时使用）

Usage

<template>
  <div class="p-4 virtual-scroll-demo">
    <Divider>基础滚动示例</Divider>
    <div class="virtual-scroll-demo-wrap">
      <VScroll :itemHeight="41" :items="data" :height="300" :width="300">
        <template #default="{ item }">
          <div class="virtual-scroll-demo__item">{{ item.title }}</div>
        </template>
      </VScroll>
    </div>

    <Divider>即使不可见，也预先加载50条数据，防止空白</Divider>
    <div class="virtual-scroll-demo-wrap">
      <VScroll
        :itemHeight="41"
        :items="data"
        :height="300"
        :width="300"
        :bench="50"
      >
        <template #default="{ item }">
          <div class="virtual-scroll-demo__item">{{ item.title }}</div>
        </template>
      </VScroll>
    </div>
  </div>
</template>
<script lang="ts">
import { defineComponent } from "vue";
import { VScroll } from "/@/components/VirtualScroll/index";

import { Divider } from "ant-design-vue";

const data: any[] = (() => {
  const arr: any[] = [];
  for (let index = 1; index < 20000; index++) {
    arr.push({
      title: "列表项" + index,
    });
  }
  return arr;
})();
export default defineComponent({
  components: { VScroll, Divider },
  setup() {
    return { data: data };
  },
});
</script>
<style lang="less" scoped>
.virtual-scroll-demo {
  &-wrap {
    display: flex;
    justify-content: center;
    margin: 0 30%;
    background: #fff;
  }

  /deep/ &__item {
    height: 40px;
    padding: 0 20px;
    border-bottom: 1px solid #ddd;
    line-height: 40px;
  }
}
</style>

Props

属性	类型	默认值	可选值	说明
height	string｜number	-	-	高度
width	string｜number	-	-	宽度
maxHeight	string｜number	-	-	最大高度
maxWidth	string｜number	-	-	最大宽度
minHeight	string｜number	-	-	最小高度
minWidth	string｜number	-	-	最小宽度
itemHeight	string｜number	-	-	每个选项高度，必传
items	any[]	-	-	选项列表

Slots

名称	说明
default	默认