<template>
  <div id="app">

    全选<input type="checkbox" v-model="checkall" @change="check_all()">
    <div v-for="(item,index) in mylist" :key="index">
      <span>{{item.oname}}</span><input type="checkbox" v-model="item.this_all" @change="check_list(index)">
      <p v-for="(goods,nindex) in item.newlist" :key="nindex">
        <input type="checkbox" v-model="goods.check_one" @change="click_input(index,nindex)">{{goods.newname}}--{{goods.price}}元
      </p>
      
    </div>
    <p>总价：{{allprice}}</p>
    <button @click="btn()">提交订单</button>
    
  </div>
</template>

<script>
export default {
  name: 'App',
  data(){
        return{
            mylist:[
              {oname:"第一个",this_all:true,newlist:[{newname:"篮球",check_one:true,price:600},{newname:"足球",check_one:true,price:200},{newname:"滑雪",check_one:true,price:150}]},
              {oname:"第二个",this_all:true,newlist:[{newname:"西瓜",check_one:true,price:35},{newname:"桃子",check_one:true,price:20}]},
              {oname:"第三个",this_all:true,newlist:[{newname:"英雄联盟",check_one:true,price:200}]},

            ],
            checkall:true,
            allprice:0,
            cpmylist:[]
        }
    },
    mounted:function(){
      this.money();
    },
    
  methods: {
  money:function(){
    var that = this;
    this.allprice=0;
    that.mylist.forEach(item1 =>{
      item1.newlist.forEach(item2 =>{
        if(item2.check_one==true){
          that.allprice+=item2.price;
        }
      })
    })
    
  },
  check_all:function(){
    var that = this;
    that.mylist.forEach(item1 => {
      item1.this_all=that.checkall
      item1.newlist.forEach(item2 => {
        item2.check_one=that.checkall
      })
    });
    that.money();
  },

  abc:function(){
    var that = this;
      var aaa = that.mylist.filter(item2 =>{
      return item2.this_all==true
    })
    aaa.length==that.mylist.length ? that.checkall = true : that.checkall = false
    that.money();
  },

  check_list:function(i){
    var that = this;
    that.mylist[i].newlist.forEach(item1 =>{
      item1.check_one=that.mylist[i].this_all
    })
    that.abc();

  },

  click_input:function(i,j){
    var that = this;
    var checklist = that.mylist[i].newlist.filter(item1 =>{
      return item1.check_one==true
    })
    
    checklist.length==that.mylist[i].newlist.length ? that.mylist[i].this_all = true : that.mylist[i].this_all = false
    that.abc();
   
  },
  
  btn:function(){
    var that = this; 
    

    that.cpmylist=JSON.parse(JSON.stringify(that.mylist));
    that.cpmylist.filter(item1 =>{
       item1.newlist = item1.newlist.filter(item2 =>{
        return item2.check_one==true
        })
    })
    that.cpmylist=that.cpmylist.filter(item3 =>{
      return item3.newlist.length!=0
    })
    
    if(that.cpmylist.length==0){
      alert("请选择商品哦！")
    }else{

      console.log("★★★您购买的商品是：");
      that.cpmylist.forEach(item4 =>{
        console.log("----------"+item4.oname+"店铺----------");
        item4.newlist.forEach(item5 =>{
            console.log("——>："+item5.newname);
        })
      })
    }
  }
  },
   
}
</script>

<style>
#app {
  font-family: 'Avenir', Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-align: center;
  color: #2c3e50;
  margin-top: 60px;
}
</style>