摘要：實現電商網站效果展示下載代碼安裝依賴啟動項目運行環境需求分析登錄頁面商品列表頁網站首頁購物車頁實現結算商品詳情頁可按顏色品牌對商品進行篩選，單擊選中，再次點擊取消根據價格進行升序降序銷量降序排列商品列表顯示圖片名稱銷量顏色單價實時顯示

vue + vue-router + vuex實現電商網站

下載代碼: git clone https://github.com/chenchangyuan/shopping.git

安裝依賴: npm install

啟動項目: npm run dev

運行環境: node v9.11.1 npm 5.6.0

登錄頁面、商品列表頁（網站首頁）、購物車頁（實現結算）、商品詳情頁

可按顏色、品牌對商品進行篩選，單擊選中，再次點擊取消

根據價格進行升序降序、銷量降序排列

商品列表顯示圖片、名稱、銷量、顏色、單價

實時顯示購物車數量（商品類別數）

購物車頁面實現商品總價、總數進行結算，優惠券打折

product.js存放商品數據（生產環境需通過接口調用獲取數據）

{
    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實現數據存儲與驗證

let username = window.localStorage.getItem("username");
let password = window.localStorage.getItem("password");
if(!util.trim(this.username) || !util.trim(this.username) ){
    window.alert("賬號或密碼不能為空");
    return;
}
if(username === this.username && password === this.password){
    this.login = false;
    window.localStorage.setItem("loginStatus", "login");
    this.$store.commit("getUser", this.username);
    window.alert("登陸成功，確定進入網站首頁");
    window.location.href = "/list";
}else{
    window.alert("賬號或密碼錯誤");
}

數據過濾與排序處理

filteredAndOrderedList(){
    //拷貝原數組
    let list = [...this.list];
    //品牌過濾
    if(this.filterBrand !== ""){
        list = list.filter(item => item.brand === this.filterBrand);
    }
    //顏色過濾
    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;
}

實時顯示應付總額與商品數

//購物車商品總數
countAll(){
    let count = 0;
    this.cartList.forEach(item => {
        count += item.count;
    });
    return count;
},
//購物車商品總價
costAll(){
    let cost = 0;
    this.cartList.forEach(item => {
        cost += this.productDictList[item.id].cost * item.count;
    });
    return cost;
}

購物車結算處理

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

vue-router路由管理/src/views/目錄下的vue組件進行設置，router-views掛載所有路由，登錄界面與商品列表頁面之間header做隱藏顯示處理，登錄狀態下刷新頁面跳轉至列表頁，其他頁面設置默認跳轉

跳轉處理

const router = new VueRouter(RouterConfig);

//跳轉前設置title
router.beforeEach((to, from, next) => {
    window.document.title = to.meta.title;
    next();
});
//跳轉后設置scroll為原點
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: "商品詳情"
        },
        component: (resolve) => require(["./views/product.vue"], resolve)
    },
    {
        path: "/cart",
        meta: {
            title: "購物車"
        },
        component: (resolve) => require(["./views/cart.vue"], resolve)
    },
    {
        path: "/login/:loginStatus",
        meta: {
            title: "登錄注冊"
        },
        component: (resolve) => require(["./views/login.vue"], resolve)
    },
    {
        path: "*",
        redirect: "/login/login"
    }
];
export default routers;

vuex狀態管理，各組件共享數據在state中設置，mutation實現數據同步，action異步加載

//配置Vuex狀態管理
const store = new Vuex.Store({
    state: {
        //商品列表信息
        productList: [],
        //購物車數據，數組形式，數據元素為對象（商品id，購買數量count）
        cartList: [],
        //當前用戶賬號
        username: window.localStorage.getItem("username"),
        //登錄狀態
        loginStatus: !!window.localStorage.getItem("loginStatus"),
    },
    getters: {
        //品牌、顏色篩選
        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;
        },
        //添加購物車
        addCart(state, id){
            const isAdded = state.cartList.find(item => item.id === id);
            //如果不存在設置購物車為1，存在count++
            if(isAdded){
                isAdded.count++;
            }else{
                state.cartList.push({
                    id: id,
                    count: 1
                })
            }
        },
        //修改購物車商品數量
        editCartCount(state, payload){
            const product = state.cartList.find(item => item.id === payload.id);
            product.count += payload.count;
        },
        //刪除購物車商品
        deleteCart(state, id){
            const index = state.cartList.findIndex(item => item.id === id);
            state.cartList.splice(index, 1)
        },
        //清空購物車
        emptyCart(state){
            state.cartList = [];
        },
        getUser(state, username){
            console.log("username",username)
            state.username = username;
        },
        getLoginStatus(state, flag){
            state.loginStatus = flag;
        }
    },
    actions: {
        //異步請求商品列表，暫且使用setTimeout
        getProductList(context){
            setTimeout(() => {
                context.commit("setProductList", product_data)
            }, 500);
        },
        //購買
        buy(context){
            //生產環境使用ajax請求服務端響應后再清空購物車
            return new Promise(resolve => {
                setTimeout(() => {
                    context.commit("emptyCart");
                    resolve();
                }, 500);
            });
        },
    }
});

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