下拉列表的默认搜索是搜索label显示label,我司要求输入id显示label名称

<el-form-item label="部门：">
     <el-select v-model="form.region1" placeholder="请选择部门" filterable clearable
        :filter-method="dataFilter">
        <el-option :label="item.name" :value="item.id" v-for="(item, index) in bumen"
            :key="index"></el-option>
    </el-select>
</el-form-item>

首先mounted加载数据 存两份数据bumen 和bumen 1

method:{
bumenList() {
            JCDeptList().then((res) => {
                let { Data, ReturnCode } = res;
                if (ReturnCode == 200) {

                    this.bumen = Data
                    this.bumen1 = Data

                }
            })

        }
},
mounted(){
	this.bumenList()
}

使用filter-method方法筛选数据

method:{
dataFilter(val) {
            this.form.region1 = val //`这一步一定要加上，不然输入框会有问题`!!!!!
            if (val) {
                this.bumen = this.bumen1.filter((item) => {
                    if (item.id.includes(val)) {
                        return true
                    }
                })
            }
            else {
                this.bumen = this.bumen1 //val为空时，还原数组
            }

        },
}