<el-select
  v-model="form.towerDeptName"
  placeholder="输入文字后选择"
  clearable
  @change="towerChange"
>
  <el-option
    v-for="item in towerList"
    :key="item.deptId"
    :label="item.fullName"
    :value="item"//注意这里对应change能获取的值
  ></el-option>
</el-select>

towerChange(e) {//获取的值和id
  this.form.towerDeptId = e.deptId
  this.form.towerDeptName = e.fullName
},