Vue+Vue-router+Vuex项目实战

摘要：实现电商网站效果展示下载代码安装依赖启动项目运行环境需求分析登录页面商品列表页网站首页购物车页实现结算商品详情页可按颜色品牌对商品进行筛选，单击选中，再次点击取消根据价格进行升序降序销量降序排列商品列表显示图片名称销量颜色单价实时显示

vue + vue-router + vuex实现电商网站

下载代码: git clone https://github.com/chenchangyuan/shopping.git

安装依赖: npm install

启动项目: npm run dev

运行环境: node v9.11.1 npm 5.6.0

登录页面、商品列表页（网站首页）、购物车页（实现结算）、商品详情页

可按颜色、品牌对商品进行筛选，单击选中，再次点击取消

根据价格进行升序降序、销量降序排列

商品列表显示图片、名称、销量、颜色、单价

实时显示购物车数量（商品类别数）

购物车页面实现商品总价、总数进行结算，优惠券打折

product.js存放商品数据（生产环境需通过接口调用获取数据）

{
    id: 1,
    name: "AirPods",
    brand: "Apple",
    image: "/src/images/airPods.jpg",
    imageDetail: "/src/images/airPods_detail.jpg",
    sales: 10000,
    cost: 1288,
    color: "白色"
},

window.localStorage实现数据存储与验证

let username = window.localStorage.getItem("username");
let password = window.localStorage.getItem("password");
if(!util.trim(this.username) || !util.trim(this.username) ){
    window.alert("账号或密码不能为空");
    return;
}
if(username === this.username && password === this.password){
    this.login = false;
    window.localStorage.setItem("loginStatus", "login");
    this.$store.commit("getUser", this.username);
    window.alert("登陆成功，确定进入网站首页");
    window.location.href = "/list";
}else{
    window.alert("账号或密码错误");
}

数据过滤与排序处理

filteredAndOrderedList(){
    //拷贝原数组
    let list = [...this.list];
    //品牌过滤
    if(this.filterBrand !== ""){
        list = list.filter(item => item.brand === this.filterBrand);
    }
    //颜色过滤
    if(this.filterColor !== ""){
        list = list.filter(item => item.color === this.filterColor);
    }
    //排序
    if(this.order !== ""){
        if(this.order === "sales"){
            list = list.sort((a, b) => b.sales - a.sales);
        }else if(this.order === "cost-desc"){
            list = list.sort((a, b) => b.cost - a.cost);
        }else if(this.order === "cost-asc"){
            list = list.sort((a, b) => a.cost - b.cost);
        }
    }
    return list;
}

实时显示应付总额与商品数

//购物车商品总数
countAll(){
    let count = 0;
    this.cartList.forEach(item => {
        count += item.count;
    });
    return count;
},
//购物车商品总价
costAll(){
    let cost = 0;
    this.cartList.forEach(item => {
        cost += this.productDictList[item.id].cost * item.count;
    });
    return cost;
}

购物车结算处理

//通知Vuex,完成下单
handleOrder(){
    this.$store.dispatch("buy").then(() => {
        window.alert("购买成功");
    })
},

vue-router路由管理/src/views/目录下的vue组件进行设置，router-views挂载所有路由，登录界面与商品列表页面之间header做隐藏显示处理，登录状态下刷新页面跳转至列表页，其他页面设置默认跳转

跳转处理

const router = new VueRouter(RouterConfig);

//跳转前设置title
router.beforeEach((to, from, next) => {
    window.document.title = to.meta.title;
    next();
});
//跳转后设置scroll为原点
router.afterEach((to, from, next) => {
    window.scrollTo(0, 0);
});

routers配置

//商品列表路由配置
const routers = [
    {
        path: "/list",
        meta: {
            title: "商品列表"
        },
        component: (resolve) => require(["./views/list.vue"], resolve)
    },
    {
        path: "/product/:id",
        meta: {
            title: "商品详情"
        },
        component: (resolve) => require(["./views/product.vue"], resolve)
    },
    {
        path: "/cart",
        meta: {
            title: "购物车"
        },
        component: (resolve) => require(["./views/cart.vue"], resolve)
    },
    {
        path: "/login/:loginStatus",
        meta: {
            title: "登录注册"
        },
        component: (resolve) => require(["./views/login.vue"], resolve)
    },
    {
        path: "*",
        redirect: "/login/login"
    }
];
export default routers;

vuex状态管理，各组件共享数据在state中设置，mutation实现数据同步，action异步加载

//配置Vuex状态管理
const store = new Vuex.Store({
    state: {
        //商品列表信息
        productList: [],
        //购物车数据，数组形式，数据元素为对象（商品id，购买数量count）
        cartList: [],
        //当前用户账号
        username: window.localStorage.getItem("username"),
        //登录状态
        loginStatus: !!window.localStorage.getItem("loginStatus"),
    },
    getters: {
        //品牌、颜色筛选
        brands: state => {
            const brands = state.productList.map(item => item.brand);
            return util.getFilterArray(brands);
        },
        colors: state => {
            const colors = state.productList.map(item => item.color);
            return util.getFilterArray(colors);
        }
    },
    //mutations只能以同步方式
    mutations: {
        //添加商品列表
        setProductList(state, data){
            state.productList = data;
        },
        //添加购物车
        addCart(state, id){
            const isAdded = state.cartList.find(item => item.id === id);
            //如果不存在设置购物车为1，存在count++
            if(isAdded){
                isAdded.count++;
            }else{
                state.cartList.push({
                    id: id,
                    count: 1
                })
            }
        },
        //修改购物车商品数量
        editCartCount(state, payload){
            const product = state.cartList.find(item => item.id === payload.id);
            product.count += payload.count;
        },
        //删除购物车商品
        deleteCart(state, id){
            const index = state.cartList.findIndex(item => item.id === id);
            state.cartList.splice(index, 1)
        },
        //清空购物车
        emptyCart(state){
            state.cartList = [];
        },
        getUser(state, username){
            console.log("username",username)
            state.username = username;
        },
        getLoginStatus(state, flag){
            state.loginStatus = flag;
        }
    },
    actions: {
        //异步请求商品列表，暂且使用setTimeout
        getProductList(context){
            setTimeout(() => {
                context.commit("setProductList", product_data)
            }, 500);
        },
        //购买
        buy(context){
            //生产环境使用ajax请求服务端响应后再清空购物车
            return new Promise(resolve => {
                setTimeout(() => {
                    context.commit("emptyCart");
                    resolve();
                }, 500);
            });
        },
    }
});

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