element-plus/docs/examples/select-v2/customized-option.vue

<template>
  <el-select-v2
    v-model="value"
    filterable
    :options="options"
    placeholder="Please select"
    style="width: 240px"
    multiple
  >
    <template #default="{ item }">
      <span style="margin-right: 8px">{{ item.label }}</span>
      <span style="color: var(--el-text-color-secondary); font-size: 13px">
        {{ item.value }}
      </span>
    </template>
  </el-select-v2>
</template>

<script lang="ts">
import { ref, defineComponent } from 'vue'

const initials = ['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j']

export default defineComponent({
  setup() {
    return {
      options: ref(
        Array.from({ length: 1000 }).map((_, idx) => ({
          value: `Option${idx + 1}`,
          label: `${initials[idx % 10]}${idx}`,
        }))
      ),
      value: ref([]),
    }
  },
})
</script>