前端代码

<div id="app">
    <select class="form-control con1" @change="changeProduct($event)">
        <option value="" disabled selected>请选择</option>
        <option v-for="item in list" :value="item">{{item}}</option>
    </select>
</div>

js代码

new Vue({
   el:"#app",
   data:{
      list:[]
   },
   methods: {
      changeProduct(event){
           console.log(event.target.value)
       }
    }
 })

动态添加option

var arr = [1,2,3,4,5];
for(var i=0; i < arr.length; i++){
     this.list.push(arr[i]);
 }