<template>
 <div>
 <select v-model="select" >
 <option v-for="(a,index) in arr" :key="index" :value="a.id">{{ a.name }}</option>
 </select>
 <p>您選擇的名字的Id是：{{select}}</p>
 </div>
</template>

<script>
 export default {
 data(){
 return{
 select:'',
 arr:[
 {id:'1',name:'html'},
 {id:'2',name:'css'},
 {id:'3',name:'js'},
 ] 
 }
 }
 }
</script>

let orderId=this.$route.query.id; 

this.$router.push(this.$route.query.redirect || '/login')