javascript - vue+element UI中selecter总是显示初始值，不显示placeholder值
使用vue搭配element UI做查询区域，因为双向数据绑定的原因，select总是在初始化的时候直接就显示了初始化的值，而不显示placeholder里面的值，如图：
可是后台默认是不穿参数查询全部，如果吧全部的value改成别的值就会导致查询不出数据，尴尬啊！！
求大神解决！
<p class="search-area m-t-md">
<p class="header clearfix">
<h3 class="text">仓库管理</h3>
<span class="btn-text" @click="modalShow = true"><i class="icon-plus"></i>添加仓库</span>
</p>
<p class="inner">
<el-input v-model="searchInfo.houseCode" placeholder="请输入仓库编码或名称"></el-input>
<el-select v-model="searchInfo.houseType" placeholder="请选择仓库类型">
<el-option value="" label="全部"></el-option>
<el-option value="1" label="总店"></el-option>
<el-option value="2" label="门店"></el-option>
</el-select>
<el-select v-model="searchInfo.storeNo" placeholder="请选择所属门店">
<el-option value="" label="全部"></el-option>
<el-option v-for="store in storeLists" :key="store.storeNo" :value="store.storeNo" :label="store.storeName"></el-option>
</el-select>
<el-button type="primary" @click="getDepotLists">查询</el-button>
</p>
</p>
<script type="text/ecmascript-6">
import {mapState} from 'vuex'
export default {
name: 'depot',
data () {
return {
searchInfo:{
method:'cn.linkea.mshop.houseFacade.findPageList',
chainCode:'',
createOperator:'',
houseCode:'',
houseName:'',
houseType:'',
pageIndex:'1',
pageSize:'10',
storeManager:'',
storeName:'',
storeNo:'',
updateOperator:''
}
}
}
}
</script>