<div id="app">
  <select v-model="cur" @change="show">
    <option value></option>
    <option :value="item.id" v-for="item in arr">{{item.text}}</option>
  </select>
  <select v-model="cur" @change="show">
    <option value></option>
    <option :value="item.id" v-for="item in arr2">{{item.text}}</option>
  </select>
</div>
var vm = new Vue({
        el: "-sharpapp",
        data: {
            cur: "",
            arr:[
              {id: 1,text:"hhh"},
              {id: 2,text:"xxx"}
            ],
            arr2:[
              {id: 3,text:"a3"},
              {id: 4,text:"a4"}
            ]
        },
        methods: {
            show: function() {
                console.log(this.cur)
            }
        }
    })page with one field. After you have done it with vue, select one of them, and both become empty. The effect I want to achieve is to choose one of them, and the other becomes "Please choose". How can it be achieved?
