JavaScript 自定义年月日选择下拉框select选择的日期方法vue实现

JavaScript 自定义选择年月日，需求如下图所示：

代码示例如下：

<div class="select-box">
	<span class="item">
		<select v-model="formData.year">
			<option v-for="item in year" :value="item">{
  
  {item}}年</option>
		</select>
	</span>
	<span class="item" @change="getDay">
		<select  v-model="formData.month">
			<option v-for="item in month" :value="item">{
  
  {item}}月</option>
		</select>
	</span>
	<span class="item">
		<select  v-model="formData.day" >
			<option v-for="item in day" :value="item">{
  
  {item}}日</option>
		</select>
    </span>
</div>
<div><a class="btn-submit btn-submit-s" @click="submit"></a></div>

js: