关于vue.js:vue-elselect

el-select可多选可单选，抉择全副后不能抉择其余，具体参照如下代码：

<el-select size="middle" clearable v-model="form.ground"  @change="handlePlat" placeholder="请抉择小组" filterable multiple  style="width: 400px;">  <el-option label="全副" value="全副"></el-option>  <el-option v-for="(item, index) in groundList" :key="index" :label="item.name" :value="String(item.id)" :disabled="item.disabled"></el-option></el-select>handlePlat(){  if (this.form.ground.indexOf("全副") == "-1") {    this.groundList.map((res) => {      res.disabled = false;    });  } else {    this.groundList.map((res) => {      res.disabled = true;    });    this.form.ground = ["全副"];  }}