4dkankan-components/docs/examples-bk/select/custom-template.vue

<template>
    <el-select v-model="value" placeholder="Select">
        <el-option v-for="item in cities" :key="item.value" :label="item.label" :value="item.value">
            <span style="float: left">{{ item.label }}</span>
            <span style="float: right; color: var(--el-text-color-secondary); font-size: 13px">{{ item.value }}</span>
        </el-option>
    </el-select>
</template>

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

const value = ref('')
const cities = [
    {
        value: 'Beijing',
        label: 'Beijing',
    },
    {
        value: 'Shanghai',
        label: 'Shanghai',
    },
    {
        value: 'Nanjing',
        label: 'Nanjing',
    },
    {
        value: 'Chengdu',
        label: 'Chengdu',
    },
    {
        value: 'Shenzhen',
        label: 'Shenzhen',
    },
    {
        value: 'Guangzhou',
        label: 'Guangzhou',
    },
]
</script>