<template>
    <el-button @click="add">Add Item</el-button>
    <el-button @click="onDelete">Delete Item</el-button>
    <el-scrollbar max-height="400px">
        <p v-for="item in count" :key="item" class="scrollbar-demo-item">
            {{ item }}
        </p>
    </el-scrollbar>
</template>

<script lang="ts" setup>
import { ref } from 'vue'
const count = ref(3)

const add = () => {
    count.value++
}
const onDelete = () => {
    if (count.value > 0) {
        count.value--
    }
}
</script>

<style scoped>
.scrollbar-demo-item {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 50px;
    margin: 10px;
    text-align: center;
    border-radius: 4px;
    background: var(--el-color-primary-light-9);
    color: var(--el-color-primary);
}
</style>
