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  • vue2购物车ch3-(过滤器使用 单件商品金额计算 全选全不选 总金额计算 删除商品功能)

    1 index.html

    <!DOCTYPE html>
    <html lang="en">
    <head>
        <meta charset="UTF-8">
        <!-- Always force latest IE rendering engine or request Chrome Frame -->
        <meta content="IE=edge,chrome=1" http-equiv="X-UA-Compatible">
        <meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=no">
        <title>购物车</title>
        <link href="css/base2.css" rel="stylesheet" >
        <link href="css/checkout.css" rel="stylesheet" >
        <link href="css/modal.css" rel="stylesheet" >
        <style>
            .quentity input{
                 40px;
                padding: 5px 10px;
                text-align: center;
            }
            .partContent{
                100px;
                height: 50px;
            }
    
            .partContent .left{
                50px;
                height:50px;
                display: table-cell;
                vertical-align: middle;
                text-align: center;
                float:left;
            }
            .partContent .right{
                50px;
                height: 50px;
                float:left;
                cursor:pointer;
            }
        </style>
    </head>
        <body class="checkout">
            <div id="app">
                <svg style="position: absolute;  0; height: 0; overflow: hidden;" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
                    <defs>
                        <symbol id="icon-add" viewBox="0 0 32 32">
                            <title>add2</title>
                            <path class="path1" d="M15 17h-13.664c-0.554 0-1.002-0.446-1.002-1 0-0.552 0.452-1 1.002-1h13.664v-13.664c0-0.554 0.446-1.002 1-1.002 0.552 0 1 0.452 1 1.002v13.664h13.664c0.554 0 1.002 0.446 1.002 1 0 0.552-0.452 1-1.002 1h-13.664v13.664c0 0.554-0.446 1.002-1 1.002-0.552 0-1-0.452-1-1.002v-13.664z"></path>
                        </symbol>
                        <symbol id="icon-ok" viewBox="0 0 39 32">
                            <title>ok</title>
                            <path class="path1" d="M14.084 20.656l-7.845-9.282c-1.288-1.482-3.534-1.639-5.016-0.351s-1.639 3.534-0.351 5.016l10.697 12.306c1.451 1.669 4.057 1.623 5.448-0.096l18.168-22.456c1.235-1.527 0.999-3.765-0.528-5.001s-3.765-0.999-5.001 0.528l-15.573 19.337z"></path>
                        </symbol>
                        <symbol id="icon-edit" viewBox="0 0 32 32">
                            <title>edit</title>
                            <path class="path1" d="M25.599 11.292l-4.892-4.892 3.825-3.825 4.892 4.892-3.825 3.825zM4.732 23.308l3.959 3.959-5.939 1.98 1.98-5.939zM10.666 26.225l-4.892-4.892 13.425-13.425 4.892 4.892-13.425 13.425zM31.687 6.713l-6.4-6.4c-0.417-0.417-1.091-0.417-1.508 0l-20.267 20.267c-0.114 0.115-0.191 0.25-0.242 0.393-0.003 0.009-0.012 0.015-0.015 0.025l-3.2 9.6c-0.128 0.383-0.029 0.806 0.257 1.091 0.203 0.204 0.476 0.313 0.754 0.313 0.112 0 0.227-0.017 0.337-0.054l9.6-3.2c0.011-0.003 0.017-0.013 0.027-0.016 0.142-0.052 0.276-0.128 0.39-0.242l20.267-20.267c0.417-0.416 0.417-1.091 0-1.508v0z"></path>
                        </symbol>
                        <symbol id="icon-del" viewBox="0 0 26 32">
                            <title>delete</title>
                            <path class="path1" d="M17.723 28c0.543 0 0.984-0.448 0.984-1v-12c0-0.552-0.441-1-0.984-1s-0.985 0.448-0.985 1v12c0 0.552 0.441 1 0.985 1v0zM7.877 28c0.543 0 0.984-0.448 0.984-1v-12c0-0.552-0.441-1-0.984-1s-0.985 0.448-0.985 1v12c0 0.552 0.441 1 0.985 1v0zM12.8 28c0.543 0 0.985-0.448 0.985-1v-12c0-0.552-0.441-1-0.985-1s-0.984 0.448-0.984 1v12c0 0.552 0.441 1 0.984 1v0zM23.631 4h-5.908v-2c0-1.104-0.882-2-1.969-2h-5.908c-1.087 0-1.969 0.896-1.969 2v2h-5.908c-1.087 0-1.969 0.896-1.969 2v2c0 1.104 0.882 2 1.969 2v18c0 2.208 1.765 4 3.939 4h13.784c2.174 0 3.938-1.792 3.938-4v-18c1.087 0 1.969-0.896 1.969-2v-2c0-1.104-0.882-2-1.969-2v0zM9.846 3c0-0.552 0.441-1 0.984-1h3.938c0.544 0 0.985 0.448 0.985 1v1h-5.908v-1zM21.662 28c0 1.104-0.882 2-1.969 2h-13.784c-1.087 0-1.97-0.896-1.97-2v-18h17.723v18zM22.646 8h-19.692c-0.543 0-0.985-0.448-0.985-1s0.441-1 0.985-1h19.692c0.543 0 0.984 0.448 0.984 1s-0.441 1-0.984 1v0z"></path>
                        </symbol>
                        <symbol id="icon-clock" viewBox="0 0 32 32">
                            <title>clock</title>
                            <path class="path1" d="M29.333 16c0-7.364-5.97-13.333-13.333-13.333s-13.333 5.97-13.333 13.333c0 7.364 5.97 13.333 13.333 13.333s13.333-5.97 13.333-13.333v0 0 0 0 0 0zM0 16c0-8.837 7.163-16 16-16s16 7.163 16 16c0 8.837-7.163 16-16 16s-16-7.163-16-16zM14.667 14.667v1.333h2.667v-10.667h-2.667v9.333zM24 18.667h1.333v-2.667h-10.667v2.667h9.333z"></path>
                        </symbol>
                    </defs>
                </svg>
    
                <div class="container">
                    <div class="cart">
                        <div class="checkout-title">
                            <span>购物车</span>
                        </div>
    
                        <!-- table -->
                        <div class="item-list-wrap">
                            <div class="cart-item">
                                <div class="cart-item-head">
                                    <ul>
                                        <li>商品信息</li>
                                        <li>商品金额</li>
                                        <li>商品数量</li>
                                        <li>总金额</li>
                                        <li>编辑</li>
                                    </ul>
                                </div>
                                <!--购物车商品列表 start-->
                                <ul class="cart-item-list">
                                    <li v-for="(item, key, index) in productList">
                                        <div class="cart-tab-1">
                                            <div class="cart-item-check">
                                                <a href="javascript:void 0" class="item-check-btn"
                                                   v-bind:class="{'check':item.checked}" @click="selectedProduct(item)">
                                                <svg class="icon icon-ok"><use xlink:href="#icon-ok"></use></svg>
                                            </a>
                                        </div>
                                        <div class="cart-item-pic">
                                            <img v-bind:src="item.productImage" v-bind:alt="item.productName">
                                        </div>
                                        <div class="cart-item-title">
                                            <div class="item-name">{{item.productName}}</div>
                                        </div>
                                        <div class="item-include">
                                            <dl>
                                                <dt>赠送:</dt>
                                                <dd v-for="part in item.parts">
                                                    <div class="partContent">
                                                        <div class="left">
                                                            <span>{{part.partsName}}</span>
                                                        </div>
                                                        <div class="right">
                                                            <img style="50px"/>
                                                        </div>
                                                    </div>
                                                </dd>
                                            </dl>
                                        </div>
                                    </div>
                                    <div class="cart-tab-2">
                                        <div class="item-price">{{item.productPrice | formatMoney}}</div>
                                    </div>
                                    <div class="cart-tab-3">
                                        <div class="item-quantity">
                                            <div class="select-self select-self-open">
                                                <div class="quentity">
                                                    <a href="javascript:void 0" @click="changeMoney(item,-1)">-</a>
                                                    <input type="text" disabled value="0" v-model="item.productQuentity">
                                                    <a href="javascript:void 0" v-on:click="changeMoney(item,1)">+</a>
                                                </div>
                                            </div>
                                            <div class="item-stock">有货</div>
                                        </div>
                                    </div>
                                    <div class="cart-tab-4">
                                        <div class="item-price-total">{{item.productPrice*item.productQuentity | money('元')}}</div>
                                    </div>
                                    <div class="cart-tab-5">
                                        <div class="cart-item-opration">
                                            <a href="javascript:void 0" class="item-edit-btn" @click="delConfirm(item)">
                                            <svg class="icon icon-del"><use xlink:href="#icon-del"></use></svg>
                                        </a>
                                    </div>
                                </div>
                            </li>
                                </ul>
                                <!--购物车商品列表 end-->
                            </div>
                        </div>
    
                <!-- footer -->
                <div class="cart-foot-wrap">
                    <div class="cart-foot-l">
                        <div class="item-all-check">
                            <a href="javascript:void 0">
                                <span class="item-check-btn" :class="{check: checkAllFlag}" @click="checkAll(true)">
                                    <svg class="icon icon-ok"><use xlink:href="#icon-ok"></use></svg>
                                </span>
                                <span>全选</span>
                            </a>
                        </div>
                        <div class="item-all-del">
                            <a href="javascript:void 0" class="item-del-btn" @click="checkAll(false)">
                                取消全选
                            </a>
                        </div>
                    </div>
                    <div class="cart-foot-r">
                        <div class="item-total">
                            总额: <span class="total-price">{{totalAllPrice | money('元')}}</span>
                        </div>
                        <div class="next-btn-wrap">
                            <a href="address.html" class="btn btn--red">结账</a>
                        </div>
                    </div>
                </div>
            </div>
        </div>
    
        <div class="md-modal modal-msg md-modal-transition" id="showModal" :class="{'md-show':delFlag}">
        <div class="md-modal-inner">
            <div class="md-top">
                <button class="md-close" @click="delFlag=false">关闭</button>
            </div>
            <div class="md-content">
                <div class="confirm-tips">
                    <p id="cusLanInfo">你确认删除此订单信息吗?</p>
                </div>
                <div class="btn-wrap col-2">
                    <button class="btn btn--m" id="btnModalConfirm" @click="delProduct()">确定</button>
                    <button class="btn btn--m btn--red" id="btnModalCancel" @click="delFlag=false">取消</button>
                </div>
            </div>
        </div>
    </div>
    <div class="md-overlay" v-show="delFlag"></div>
        </div>
            <script type="text/javascript" src="node_modules/vue/dist/vue.js"></script>
            <script type="text/javascript" src="node_modules/axios/dist/axios.js"></script>
            <script type="text/javascript" src="js/cart.js"></script>
        </body>
    </html>

    2 cart.js

    /**
     * Created by Administrator on 2017/4/2 0002.
     */
    // Vue.config.silent = true; 用于取消 Vue 所有的日志与警告
    let vmCart = new Vue({
        el: '#app',
        data: {
          totalMoney: 0, //单商品总金额
          totalAllPrice: 0,  //选择所有商品的总金额
          productList: [], //作为商品列表
          checkAllFlag: false, //是否全选 存在该变量才能被监听到
          delFlag: false, //是否删除
          delIndex: ''  //保留点击删除哪个li的索引
        },
        filters: {  //局部过滤器
            formatMoney: function (value) { //格式化价格格式
                return "¥"+value.toFixed(2);
            },
        },
        mounted: function(){ //dom加载完后(生命周期)实例创建后查询某个方法钩子函数--进来之后查询商品
            //this.cartView(); //2使用
            this.$nextTick(function () {
                //mounted不能保证此时new Vue()一定实例化了(使用vmCart可能会报错)
                //$nextTick()可以保证一定是实例化后了
                vmCart.cartView();
            });
        },
        methods: {
            cartView: function(){ //1定义
                const _this = this; //这里的this指向vmCart
                axios.get('data/cartData.json') //使用axios
                .then(function(res){  //then回调函数
                // 使用箭头函数的话,this的作用域并不会变,还是指向vmCart
                //     (res)=>{
                //     if(res.status == 200){
                //         this.totalMoney = res.data.result.totalMoney;
                //         this.list = res.data.result.list;
                //     }
                // }
                // 不使用箭头函数的场合
                // 如果要使用vmCart实例,
                // 就必须在mounted钩子函数里再调用一次$nextTick方法才能保证el被render在dom中
                    //res 数据库返回的对象
                    //res.data.result.list 返回的数据数组
                    //console.log(res);
                    if(res.status == 200){ //状态为200时执行后面语句
                        _this.productList = res.data.result.list;
                        _this.totalMoney = res.data.result.totalMoney;
                    }
                })
                .catch(function(err){
                    console.log('get data error...'); //从数据库获取数据出现问题
                });
            },
            changeMoney: function (item, way) { //商品数量增加和减少
                if(way>0){ //点击了+
                    item.productQuentity++;
                }else{ //点击了-
                    item.productQuentity<=0?item.productQuentity = 0:item.productQuentity--;
                }
                this.calcTotalPrice();
            },
            selectedProduct: function (item) {
                if(typeof item.checked == 'undefined'){ //判断item.checked是否存在
                    Vue.set(item, 'checked', true); //向item全局注册了一个属性checked值为true
                    //this.$set(item, 'checked', true);//局部注册item.checked
                }else{ //存在--即至少点击了一次后
                    item.checked = !item.checked;
                };
                this.calcTotalPrice();
            },
            checkAll: function (flag) { //全选/取消全选
                this.checkAllFlag = flag;
                this.productList.forEach((item, index) => {
                    //这里存在一个问题当用户直接点击全选
                    //此时item.check还未存在这个属性 所以要检测一下
                    if(typeof item.checked == 'undefined'){
                        //Vue.set(item, 'checked', true);
                        this.$set(item, 'checked', this.checkAllFlag); //箭头函数内部还是外部作用域的this
                    }else{
                        item.checked = this.checkAllFlag;
                    }
                });
                this.calcTotalPrice();
            },
            calcTotalPrice: function () { //计算选中商品总金额函数
                this.totalAllPrice = 0;
                this.productList.forEach((item, index) => {
                  if(item.checked){ //说明这个商品选中了
                      this.totalAllPrice += item.productPrice*item.productQuentity;
                  }
                })
            },
            delConfirm: function (item) { //点击删除按钮
                this.delFlag = true;
                this.delIndex = item;
            },
            delProduct: function () { //删除点击了删除的商品
                let index = this.productList.indexOf(this.delIndex);
                this.productList.splice(index,1);
                  //vue2开始认为js就有删除数组的方法故自己写操作
                  //实际项目中需要把这个商品的信息传递到后台
                this.delFlag = false;
            }
        }
    });
    
    Vue.filter('money', (value, type) => { //全局过滤器
        return "¥"+ value.toFixed(2) + type;
    });

    3 自己理解

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  • 原文地址:https://www.cnblogs.com/easyweb/p/6664157.html
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