select选择框里填充图片，下拉选项带图片

遇到一个需求，选择下拉框选取图标，填充到框里

1、效果展示

在这里插入图片描述

2、代码

  <el-form-item label="工种图标" class="Form_icon Form_label"><el-select ref="select" :value="formLabelAlign.icon" placeholder="请选择":popper-append-to-body="false" @change="changIcon"><el-option v-for="item in icons" :key="item.value" :value="item.value"><div class="Form_label_select"><img :src="item.icon" class="Form_label_img"></div></el-option></el-select></el-form-item>

先在mounted给下拉框添加一个img标签

     mounted() {const newLi = document.createElement("img");this.$refs['select'].$el.children[0].appendChild(newLi);},

选取图标的时候更改img样式

          changIcon(val) {let item = this.icons.filter((item) => { return item.value == val })let img = this.$refs['select'].$el.children[0].children[2];//该select数下来第三个子节点img.setAttribute('src', item[0].icon)//也可以写在下一步，item[0].icon得用${}括起来img.setAttribute('style', `width: 35px;height:95%;position:absolute;left:0;background:white;`)this.formLabelAlign.icon = val},

注意：图片路径的引入得用import,否则找不到，无法显示

   import icon1 from '@/assets/aaa/icon1.png';import icon2 from '@/assets/aaa/icon2.png';import icon3 from '@/assets/aaa/icon3.png';icons: [{ value: '1', icon: icon1, checked: false }, { value: '2', icon: icon2, checked: false }, { value: '3', icon: icon3, checked: false },]

   ::v-deep .Form_icon.el-select {display: inline-block;position: relative;width: 100%;border: 1px solid #DCDFE6;border-radius: 4px;padding: 2px 0 2px 12px;box-sizing: border-box;}::v-deep .Form_icon.el-popper[x-placement^=bottom] {margin-left: -10px;}::v-deep .Form_icon.el-input__inner {border: none;padding-left: 0;}