使用vue根据状态添加列表数据和删除列表数据的

<template>
 <div>
  <div v-for="obj of a" @click="sel(obj)">
   {{obj.name}} <span v-if="!obj.select">+</span><span v-else>-</span>
  </div>
  <hr>
  <div>
   <div v-for="(obj,index) in temp" @click="cel(obj,index)">{{obj}}</div>
  </div>
 </div>
</template>

<script>
export default {
 methods: {
  sel(obj){
   obj.select = !obj.select
   if(obj.select){
    this.temp.push(obj)
   }else{
    obj.select = !obj.select
   }   
  },
  cel(obj,index){
   obj.select = !obj.select;
   console.log(index)
   this.temp.splice(index,1);   
  }
 },
 data(){
  return {
   temp:[],
   a:[{
   "code": "1",
   "name": "1",
   "cityId": 8,
   "regionId": null,
   "blockId": null,
   "cityName": null,
   "regionName": null,
   "blockName": null,
   "address": "刀茅巷216号",
   "buildingNum": null,
   "unitNum": null,
   "houseNum": null,
   "pleteTime": null,
   "developer": null,
   "id": null,
   "pinYin": null,
   "pinYinFirst": null,
   "pinYinShort": null,
   select:false
  },{
   select:false,
   "code": "2",
   "name": "2",
   "cityId": 8,
   "regionId": null,
   "blockId": null,
   "cityName": null,
   "regionName": null,
   "blockName": null,
   "address": "刀茅巷216号",
   "buildingNum": null,
   "unitNum": null,
   "houseNum": null,
   "pleteTime": null,
   "developer": null,
   "id": null,
   "pinYin": null,
   "pinYinFirst": null,
   "pinYinShort": null
  },{
   select:false,
   "code": "3",
   "name": "3",
   "cityId": 8,
   "regionId": null,
   "blockId": null,
   "cityName": null,
   "regionName": null,
   "blockName": null,
   "address": "刀茅巷216号",
   "buildingNum": null,
   "unitNum": null,
   "houseNum": null,
   "pleteTime": null,
   "developer": null,
   "id": null,
   "pinYin": null,
   "pinYinFirst": null,
   "pinYinShort": null
  }],
  }
 }
}
</script>