# 2 25.封装自定义下拉图标组件

* #### 下拉组件图标封装

```js
<template>
    <div class="flex items-center">
        <el-icon :size="20" v-if="modelValue" class="mr-2">
                <component :is="modelValue"></component>
        </el-icon>


        <el-select filterable :modelValue="modelValue" placeholder="请选择图标" @change="handleChange">
            <el-option v-for="item in icons"
                :key="item"
                :label="item"
                :value="item">

                <div class="flex items-center justify-between">
                    <el-icon>
                        <component :is='item'></component>
                    </el-icon>
                    <span class="text-gray-500">{{ item }}</span>
                </div>

            </el-option>
        </el-select>
        
        
    </div>
</template>

<script setup>
import { ref } from "vue"
import * as iconList from '@element-plus/icons-vue'

const icons = ref(Object.keys(iconList))

const emit = defineEmits(['update:modelValue'])


const handleChange = (icon) => {
    emit('update:modelValue', icon)
}

defineProps({
    modelValue: String
})

</script>
```

* #### 调用

```js
<IconSelect v-model="form.icon" ></IconSelect>
```

<div><img src="C:%5CUsers%5CAdministrator.DESKTOP-UK43ECI%5CAppData%5CRoaming%5Cmarktext%5Cimages%5C2023-02-25-19-44-34-image.png" alt=""> <figure><img src="/files/gFnOTXzhXdQD936bY8mn" alt=""><figcaption></figcaption></figure></div>


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