点餐小程序（优化版）

//logs.js var util = require('../../utils/util.js') var sliderWidth = 190// 需要设置slider的宽度，用于计算中间位置 // 最大行数 var max_row_height = 5; // 行高 var food_row_height = 50; // 底部栏偏移量 var cart_offset = 90; Page({ data: { logs: [], tabs: ["今日菜单", "我的订单"], activeIndex: 0, sliderOffset: 0, sliderLeft: 0, sliderWidth: 0.5, // 右菜单 menu_list: [], // 左菜单 foodList: [],//展示菜品 allFoodList: [],//所有获取到的菜品 //我的订单列表 orderList: [], // 购物车 cartList: [], hasList: false,// 列表是否有数据 totalPrice: 0,// 总价，初始为0 totalNum: 0, //总数，初始为0 // 购物车动画 animationData: {}, animationMask: {}, maskVisual: "hidden", maskFlag: true, // 左右两侧菜单的初始显示次序 curNav: 0, //判断是否登录会员 loginFlag: true, //判断是否已经发送验证码 sendingF: false, // 倒计时时间 second: 60, }, onLoad: function (options) { var that = this // 获取购物车缓存数据 var arr = wx.getStorageSync('cart') || []; // 左分类菜单 var menu_list = this.data.menu_list; // 获取左侧分类菜单数据 var categories = [ { "id": 0, "name": "全部" }, { "id": 9, "name": "活动品" }, { "id": 1, "name": "汤·粥" }, { "id": 2, "name": "热菜" }, { "id": 5, "name": "面点" }, { "id": 6, "name": "特色" }, { "id": 7, "name": "小吃" }, { "id": 8, "name": "水吧" } ] that.setData({ menu_list: categories, }) // 右菜品菜单 var foodList = this.data.foodList; var allFoodList = this.data.allFoodList; // 购物车总量、总价 var totalPrice = this.data.totalPrice var totalNum = this.data.totalNum // 获取右侧菜品列表数据 var resFood = [ { "id": 6, "name": "美地麻辣小龙虾", "thumb": "", "imageUrl":"../../image/1.jpg", "price": "98.00", "unit": "份", "catid": 6, "sales": 0, "note": "", "quantity": 0 }, { "id": 7, "name": "水吧鸡尾酒", "thumb": "", "imageUrl": "../../image/2.jpg", "price": "39.00", "unit": "杯", "catid": 8, "sales": 0, "note": "", "quantity": 0 }, { "id": 9, "name": "九塔香辣子鸡", "thumb": "", "imageUrl": "../../image/3.jpg", "price": "68.00", "unit": "份", "catid": 2, "sales": 0, "note": "", "quantity": 0 }, { "id": 10, "name": "跳舞茄盒", "thumb": "", "imageUrl": "../../image/3.jpg", "price": "40.00", "unit": "份", "catid": 2, "sales": 0, "note": "", "quantity": 0 }, { "id": 12, "name": "土匪猪肝", "thumb": "", "imageUrl": "../../image/3.jpg", "price": "40.00", "unit": "份", "catid": 2, "sales": 0, "note": "", "quantity": 0 }, { "id": 13, "name": "小炒黄牛肉", "thumb": "", "imageUrl": "../../image/3.jpg", "price": "58.00", "unit": "份", "catid": 2, "sales": 0, "note": "", "quantity": 0 }, { "id": 14, "name": "小酥肉", "thumb": "", "imageUrl": "../../image/3.jpg", "price": "19.00", "unit": "份", "catid": 2, "sales": 0, "note": "", "quantity": 0 }, { "id": 15, "name": "橄榄油腊鲜有机花菜\t", "thumb": "", "imageUrl": "../../image/3.jpg", "price": "28.00", "unit": "份", "catid": 2, "sales": 0, "note": "", "quantity": 0 }, { "id": 19, "name": "榴莲面包", "thumb": "", "imageUrl": "../../image/3.jpg", "price": "29.80", "unit": "份", "catid": 5, "sales": 0, "note": "", "quantity": 0 }, { "id": 20, "name": "泡芙", "thumb": "", "imageUrl": "../../image/3.jpg", "price": "6.00", "unit": "斤", "catid": 5, "sales": 0, "note": "", "quantity": 0 }, { "id": 21, "name": "手撕包菜", "thumb": "", "imageUrl": "../../image/3.jpg", "price": "19.00", "unit": "份", "catid": 2, "sales": 0, "note": "", "quantity": 0 }, { "id": 22, "name": "糖醋里脊", "thumb": "", "imageUrl": "../../image/3.jpg", "price": "97.90", "unit": "份", "catid": 2, "sales": 0, "note": "", "quantity": 0 }, { "id": 24, "name": "我是热菜区的new菜", "thumb": "", "imageUrl": "../../image/3.jpg", "price": "25.00", "unit": "份", "catid": 2, "sales": 0, "note": "", "quantity": 0 }, { "id": 25, "name": "美地麻辣小龙虾", "thumb": "", "imageUrl": "../../image/3.jpg", "price": "125.00", "unit": "份", "catid": 6, "sales": 0, "note": "", "quantity": 0 }, { "id": 26, "name": "美地甜点", "thumb": "", "imageUrl": "../../image/3.jpg", "price": "20.00", "unit": "15", "catid": 7, "sales": 0, "note": "", "quantity": 0 }, { "id": 27, "name": "特色小龙虾", "thumb": "/uploads/20178/201708311002557FPpnEyE.jpg", "imageUrl": "../../image/3.jpg", "price": "89.90", "unit": "份", "catid": 2, "sales": 0, "note": "", "quantity": 0 }, { "id": 28, "name": "雕黄醉蟹钳", "thumb": "/uploads/20178/20170831165625IyWlwdFM.jpg", "imageUrl": "../../image/3.jpg", "price": "48.00", "unit": "份", "catid": 2, "sales": 0, "note": "", "quantity": 0 }, { "id": 29, "name": "雕黄醉蟹钳1", "thumb": "/uploads/20178/20170831165711bLN478bK.jpg", "imageUrl": "../../image/3.jpg", "price": "48.00", "unit": "份", "catid": 2, "sales": 0, "note": "", "quantity": 0 }, { "id": 30, "name": "百合莲子红豆露", "thumb": "", "imageUrl": "../../image/3.jpg", "price": "32.00", "unit": "扎", "catid": 8, "sales": 0, "note": "", "quantity": 0 }, { "id": 31, "name": "屈臣氏香草苏打水", "thumb": "", "imageUrl": "../../image/3.jpg", "price": "15.00", "unit": "瓶", "catid": 8, "sales": 0, "note": "", "quantity": 0 }, { "id": 32, "name": "赫默父子夏瑟尼蒙哈榭干白", "thumb": "",