vue实现商品加减计算总价

需求是商品只能选一次,有原价和现价.大概的效果图是这样:完整代码在这里,直接复制就能用:<!DOCTYPE html><html lang="zh"><head><meta charset="UTF-8"><title>
here962464

5488人浏览 · 2018-08-11 15:54:53
here962464 · 2018-08-11 15:54:53 发布
需求是商品只能选一次,有原价和现价.
大概的效果图是这样:
这里写图片描述
完整代码在这里,直接复制就能用:
<!DOCTYPE html>
<html lang="zh">
<head>
    <meta charset="UTF-8">
    <title>Document</title>
    <style type="text/css">
        html{
            background: rgb(214,175,209);
        }
    /*计算器*/
        #app{
            text-align: center;
            margin-top: 8%;
            position: relative;
        }
        .goods_box{
            width: 70vw;
            margin-left:15vw;
            height: auto;
            margin-top: 5%;
        }
        .goods_box ul{
           width: 100%;
           overflow:auto;
        }
        .goods_box ul li{
            float: left;
            width: 23%;
            height: auto;
            cursor: pointer;
            margin: 2% 1%;
            font-size: 0.6rem;
            background: #fff;
            display: flex;
            align-items: center;
            align-content: center;
            padding-bottom: 1%;
            border-radius: 4px;
        }
        .goods_img{
            width: 40%;
            border-radius: 6px;
            height: auto;
            margin-left: -4%;
            margin-top: -4%;
            box-shadow: 3px 3px 2px rgba(0,0,0,.24);
        }
        .price{
            margin-left: 6%;
            text-align: left;
        }
        .or_price{
            color: rgba(242,58,58,0.8);
            text-decoration: line-through;
        }
        .goods_name{
            margin-top: 4%;
        }
        .now_and_or{
            margin-top: 5%;
        }
        .now_price{
            font-size: 1rem;
        }

        /*计算结果的盒子*/
        .count_box{
            width: 70vw;
            margin-left:15vw;
            height: auto;
            border: 2px dashed rgb(253,234,93);
            display: flex;
            align-items: center;
            padding: 2%;
            position: relative;
        }
        .count_box .goods_img{
            width: 100px;
            height: 100px;
            margin:0;
            box-shadow: none;
        }
        .count_box ul{
            width: 100%;
           overflow:auto;
        }
        .count_box ul li{
            float: left;
            cursor: pointer;
            font-size: 0.6rem;
            display: flex;
            align-items: center;
            align-content: center;
            padding-top: 2%;
            padding-bottom: 1%;
            border-radius: 4px;
        }
        .count_box ul li .price{
            text-align: center;
        }
        .img_box{
            position: relative;
        }
        .add{
            font-size: 2rem;
            color:rgb(253,234,93);
            margin-left: 20px;
        }
        .delete{
            display: flex;
            align-items: center;
            color:rgb(253,234,93);
            font-size: 34px;
            position: absolute;
            top: -25%;
            right: -9%;
            cursor: pointer;
            z-index: 1;
        }
        /*计算结果*/
        .result{
            margin-top: 16%;
            margin-left: -30px;
            font-size: 1rem;
            display: flex;
            align-items: center;
            text-align: left;
            background: rgb(214,175,209);
        }
        .result_content{
            display: block;
            margin-left: 2rem;
        }
        .or_amount{
            text-decoration: line-through;
            line-height: 2rem;
        }
        .equal_to{
            font-size: 2rem;
            color:rgb(253,234,93);
        }
        .now_amount span{
            color:rgb(253,234,93);
        }

        .img01{
            position: absolute;
        }
        .buy{
            position: absolute;
            right: 12px;
            bottom: 10px;
            font-size: 0.75rem;
        }
    </style>
</head>
<body>
    <!-- 商品计算器 -->
    <div id="app">
        <div class="goods_box">
          <ul>
            <li class="goods" v-for="(item, index) in list" @click="choose(index)">
              <img class="goods_img" v-bind:src="item.goods_img">
              <div class="price">
                    <div class="goods_name">
                        {{item.name}}
                    </div>
                    <div class="now_and_or">
                        <div class="now">现价：<span class="now_price">{{item.hide_price}}￥</span></div>
                        <div class="or">原价：<span class="or_price">{{item.or_price}}￥</span></div>
                    </div>
              </div>
            </li>
          </ul>
        </div>
        <div class="count_box">
            <ul>
                <li v-for="(item, index) in count_list" @click="deleteGoods(index)">
                  <div class="count_box_item">
                     <div class="img_box">
                        <div class="delete">×</div>
                        <img class="goods_img" v-bind:src="item.goods_img">
                      </div>
                  </div>
                  <div class="add">+</div>
               </li>
               <li>
                    <div class="result">
                        <div class="equal_to">=</div>
                        <div class="result_content">
                            <div class="or_amount">原价：{{or_amount}}￥</div>
                            <div class="now_amount">现价：<span>{{now_amount}}￥</span></div>
                        </div>
                    </div>
               </li>
            </ul>
            <a class="buy" href="#">立即购买</a>
        </div>
    </div>

    <script src="https://cdn.jsdelivr.net/npm/vue@2.5.17/dist/vue.js"></script>
    <script type="text/javascript">
        var idsArray = [];
        var or_priceArray = [];
        var now_priceArray = [];
        //数组去重
        function removeDuplicatedItem(arr) {
           for(var i = 0; i < arr.length-1; i++){
               for(var j = i+1; j < arr.length; j++){
                   if(arr[i]==arr[j]){
                      arr.splice(j,1);
                      j--;
                   }
               }
           }
           return arr;
        }
        var app = new Vue({
            el:"#app",
            data:{
                // 商品列表
                list:[
                    {
                        goods_img:"http://cdn.w7.cc/images/2018/05/19/mdqzEyVEeqBdK3xKulqskX9ryMMfTbgbU1jMOE7i.jpeg?imageView2/5/w/88/format/png",
                        or_price:"100",
                        now_price:"10",
                        //显示的价格
                        hide_price:"50",
                        name:"很长很长的名字"
                    },
                    {
                        goods_img:"http://cdn.w7.cc/images/2018/05/19/mdqzEyVEeqBdK3xKulqskX9ryMMfTbgbU1jMOE7i.jpeg?imageView2/5/w/88/format/png",
                        or_price:"200",
                        now_price:"20",
                        hide_price:"？",
                        name:"很长很长的名字"
                    },
                    {
                        goods_img:"http://cdn.w7.cc/images/2018/05/19/mdqzEyVEeqBdK3xKulqskX9ryMMfTbgbU1jMOE7i.jpeg?imageView2/5/w/88/format/png",
                        or_price:"300",
                        now_price:"30",
                        hide_price:"50",
                        name:"很长很长的名字"
                    },
                    {
                        goods_img:"http://cdn.w7.cc/images/2018/05/19/mdqzEyVEeqBdK3xKulqskX9ryMMfTbgbU1jMOE7i.jpeg?imageView2/5/w/88/format/png",
                        or_price:"100",
                        now_price:"10",
                        hide_price:"50",
                        name:"很长很长的名字"
                    },
                    {
                        goods_img:"http://cdn.w7.cc/images/2018/05/19/mdqzEyVEeqBdK3xKulqskX9ryMMfTbgbU1jMOE7i.jpeg?imageView2/5/w/88/format/png",
                        or_price:"200",
                        now_price:"20",
                        hide_price:"？",
                        name:"很长很长的名字"
                    },
                    {
                        goods_img:"http://cdn.w7.cc/images/2018/05/19/mdqzEyVEeqBdK3xKulqskX9ryMMfTbgbU1jMOE7i.jpeg?imageView2/5/w/88/format/png",
                        or_price:"300",
                        now_price:"30",
                        hide_price:"50",
                        name:"很长很长的名字"
                    },
                    {
                        goods_img:"http://cdn.w7.cc/images/2018/05/19/mdqzEyVEeqBdK3xKulqskX9ryMMfTbgbU1jMOE7i.jpeg?imageView2/5/w/88/format/png",
                        or_price:"100",
                        now_price:"10",
                        hide_price:"50",
                        name:"很长很长的名字"
                    },
                    {
                        goods_img:"http://cdn.w7.cc/images/2018/05/19/mdqzEyVEeqBdK3xKulqskX9ryMMfTbgbU1jMOE7i.jpeg?imageView2/5/w/88/format/png",
                        or_price:"200",
                        now_price:"20",
                        hide_price:"50",
                        name:"很长很长的名字"
                    },
                    {
                        goods_img:"http://cdn.w7.cc/images/2018/05/19/mdqzEyVEeqBdK3xKulqskX9ryMMfTbgbU1jMOE7i.jpeg?imageView2/5/w/88/format/png",
                        or_price:"300",
                        now_price:"30",
                        hide_price:"50",
                        name:"很长很长的名字"
                    }
                ],
                //动态选择列表
                count_list:[],
                //原总价
                or_amount:0,
                //现总价
                now_amount:0
            },
            methods:{
                choose: function(index){
                    var arr = this.list;
                    var that = this;
                    //清空数组
                    this.count_list = [];

                    this.or_amount = 0;
                    this.now_amount = 0;

                    or_priceArray = [];
                    now_priceArray = [];

                    idsArray.push(index);
                    //数组去重
                    removeDuplicatedItem(idsArray);
                    //循环打印选中商品
                    for( var i=0;i<idsArray.length;i++){
                        that.count_list.push(arr[idsArray[i]]);
                        or_priceArray.push(parseInt(arr[idsArray[i]].or_price));
                        now_priceArray.push(parseInt(arr[idsArray[i]].now_price));
                    }
                    //循环计算价格
                    for(var i=0;i<or_priceArray.length;i++){
                        this.or_amount += or_priceArray[i];
                        this.now_amount += now_priceArray[i];
                    }
                },
                //删除商品
                deleteGoods: function(index){
                    this.or_amount = 0;
                    this.now_amount = 0;

                    this.count_list.splice(index,1);
                    idsArray.splice(index,1);
                    or_priceArray.splice(index,1);
                    now_priceArray.splice(index,1);
                    //循环计算价格
                    for(var i=0;i<or_priceArray.length;i++){
                        this.or_amount += or_priceArray[i];
                        this.now_amount += now_priceArray[i];
                    }
                }
            }
        })
    </script>
</body>
</html>
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