vue获取dom元素的值

<select data-am-selected="{btnSize: 'sm'}" ref="select" >
   <option v-for="item in list" :value="item.name">{{item.name}}</option>
</select>

<input size="16" type="text" ref="input" >

var select = that.$refs.select;
var selectIndex = select.selectedIndex;
var selectText = select.options[selectIndex].text;
var selectValue = select_express.options[selectIndex].value;

var input = that.$refs.input;
var inputValue = input.value;