<div id="app">
        <select name="topicCategoryId" class="article-title" id="category" @change="changeCategoryList($event)"  style="width: 180px;">
                <option  v-for="(category,index) in categoryList" v-bind:value="category.id">{{category.categoryTitle}}</option>
         </select>
   </div

  data:{
        categoryList:[{id:1,categoryTitle:"Java面試"},{id:2,categoryTitle:"Web開發(fā)"},
        {id:3,categoryTitle:"設(shè)計系統(tǒng)"},{id:4,categoryTitle:"框架服務(wù)"}]
     },
                
  methods: {
         changeCategoryList(event){
            console.log(event);
            var selectIndex =event.target.selectedIndex;//選中的第幾個option元素 從0開始
            var options = event.target.options;//代表option組合
            
            options[selectIndex].innerHTML  //選擇的值 // categoryTitle
            event.target.value;  //綁定的value值  //v-bind:value="category.id"
                                   
            console.log("options[selectIndex].innerHTML=="+options[selectIndex].innerHTML);
            console.log("event.target.value=="+event.target.value);
        }
       }