怎么在layui中使用数据表格实现一个购物车功能

<!DOCTYPE html> <html lang="zh-CN"> <head> <meta charset="UTF-8"> <title>layui数据表格实现类购物车功能</title> <link rel="stylesheet" type="text/css" href="//layui.hcwl520.com.cn/layui/css/layui.css?v=201801090202" rel="external nofollow" /> <script src="//layui.hcwl520.com.cn/layui/layui.js?v=201801090202"></script> <link rel="stylesheet" href="css/index.css" >  <link rel="shortcut icon" href=https://www.kaisir.cn/icon/favicon.ico > <script src="js/index.js"></script> </head> <body> <div id="guide_panel"> <blockquote class="layui-elem-quote">layui数据表格实现类购物车功能</blockquote> <ul class="layui-timeline"> <li class="layui-timeline-item"> <i class="layui-icon layui-timeline-axis"></i> <div class="layui-timeline-content layui-text"> <h4 class="layui-timeline-title">使用方法</h4> <p> <br>1：单击左边商品列表任一商品，右边购物车数据表格会渲染一条数据，同时计算总数，合计金额。 <br>2：购物车数据表格，数量/单价改变，金额改变，底部合计金额，数量，也会跟随改变 <br>3：购物车数据表格，‘删除'，删除当前所选商品 </p> </div> </li> </ul> </div> <div id="row_panel"> <div class="table-panel"> <table id="List1" lay-filter="List1"></table> <p>商品列表</p> </div> <div class="table-panel"> <table id="List2" lay-filter="List2"></table> <p>购物车</p> </div> <div class="bottom-panel"> <span>总数:</span><span id="RechargeCount_TotalQty">---</span> <span>合计金额:</span><span id="RechargeCount_TotalMoney">---</span> </div> </div> </body> </html>

*{ margin: 0; padding: 0; } #guide_panel{ width: 98%; margin: 0 auto; } #row_panel{ width: 98%; height: 720px; margin: 0 auto; /*border: solid 1px red;*/ } #row_panel .table-panel{ width: 50%; height: 500px; float: left; text-align: center; } #row_panel .table-panel p{ color:#BBBBBB; } #row_panel .bottom-panel{ width: 100%; height: 40px; background: #F0F0F0; float: left; margin-top: 20px; text-align: right; } #row_panel .bottom-panel span{ line-height: 40px; font-size: 18px; }

layui.use(['layer', 'form', 'element', 'jquery', 'table', 'laydate'], function () { var form = layui.form, element = layui.element, $ = layui.$, layer = layui.layer, table = layui.table, laydate = layui.laydate; /** * 数据表格:定义表头数据 * @type {{}} */ var lan = {}; lan.cpbm = "产品编码"; lan.cpjm = "产品简码"; lan.cpmc = "产品名称"; lan.ckjj = "参考进价"; lan.lpbz = "礼品标志"; lan.spbh = "商品编号"; lan.spmc = "商品名称"; lan.sl = "数量"; lan.dj = "单价"; lan.je = "金额"; lan.cz = "操作"; /** * 购物车数据 * @type {Array} */ var goodsData = []; /** * 商品数据 * @type {string} */ var GoodsDataStr = "[{\"GoodsID\":\"20190308131925\",\"GoodsName\":\"123456\",\"NameCode\":\"123456\",\"GoodsClass\":\"13659603513393152\",\"GoodsType\":1,\"Price\":20,\"PriceUnit\":0,\"PriceNum\":0,\"XPrice\":0,\"Images\":null,\"IsPoint\":0,\"PointType\":0,\"MinDiscount\":0.8,\"IsDiscount\":1,\"Remark\":null,\"IsDelete\":0,\"IsGift\":0,\"ExchangePoint\":0,\"CreateTime\":20190308131956,\"CompID\":198,\"ShopID\":\"237\",\"MasterID\":\"237\",\"MeasureUnit\":\"个\",\"Specials\":0,\"IsShelf\":0,\"FreightTemplateID\":null,\"Id\":\"14157977930075136\",\"LAY_TABLE_INDEX\":0},{\"GoodsID\":\"20190301183528\",\"GoodsName\":\"测试2\",\"NameCode\":\"CS2\",\"GoodsClass\":\"14148378555485184\",\"GoodsType\":1,\"Price\":60,\"PriceUnit\":0,\"PriceNum\":0,\"XPrice\":0,\"Images\":null,\"IsPoint\":0,\"PointType\":0,\"MinDiscount\":0,\"IsDiscount\":0,\"Remark\":null,\"IsDelete\":0,\"IsGift\":0,\"ExchangePoint\":0,\"CreateTime\":20190301183538,\"CompID\":198,\"ShopID\":\"237\",\"MasterID\":\"237\",\"MeasureUnit\":\"次\",\"Specials\":0,\"IsShelf\":0,\"FreightTemplateID\":null,\"Id\":\"14148379235683328\",\"LAY_TABLE_INDEX\":1},{\"GoodsID\":\"20190301183516\",\"GoodsName\":\"测试1\",\"NameCode\":\"CS1\",\"GoodsClass\":\"14148378482019328\",\"GoodsType\":1,\"Price\":50,\"PriceUnit\":0,\"PriceNum\":0,\"XPrice\":0,\"Images\":null,\"IsPoint\":0,\"PointType\":0,\"MinDiscount\":0,\"IsDiscount\":0,\"Remark\":null,\"IsDelete\":0,\"IsGift\":0,\"ExchangePoint\":0,\"CreateTime\":20190301183522,\"CompID\":198,\"ShopID\":\"237\",\"MasterID\":\"237\",\"MeasureUnit\":\"次\",\"Specials\":0,\"IsShelf\":0,\"FreightTemplateID\":null,\"Id\":\"14148378983274496\",\"LAY_TABLE_INDEX\":2},{\"GoodsID\":\"6914068013626\",\"GoodsName\":\"纸巾\",\"NameCode\":\"zj\",\"GoodsClass\":\"13819788947571712\",\"GoodsType\":1,\"Price\":5,\"PriceUnit\":0,\"PriceNum\":0,\"XPrice\":0,\"Images\":null,\"IsPoint\":1,\"PointType\":0.1,\"MinDiscount\":0,\"IsDiscount\":0,\"Remark\":\"%3Cp%3Enull%3C/p%3E\",\"IsDelete\":0,\"IsGift\":0,\"ExchangePoint\":0,\"CreateTime\":20190217092044,\"CompID\":198,\"ShopID\":\"237\",\"MasterID\":\"237\",\"MeasureUnit\":\"盒\",\"Specials\":0,\"IsShelf\":0,\"FreightTemplateID\":null,\"Id\":\"14130846812542976\",\"LAY_TABLE_INDEX\":3},{\"GoodsID\":\"20190126103924660\",\"GoodsName\":\"测试呀1\",\"NameCode\":\"CSY1\",\"GoodsClass\":\"13659654677299200\",\"GoodsType\":1,\"Price\":20,\"PriceUnit\":0,\"PriceNum\":0,\"XPrice\":0,\"Images\":\"/FileSys/MemPhoto/198/20190126103959902.jpg\",\"IsPoint\":0,\"PointType\":0,\"MinDiscount\":0,\"IsDiscount\":0,\"Remark\":\"\",\"IsDelete\":0,\"IsGift\":0,\"ExchangePoint\":0,\"CreateTime\":20190126103959,\"CompID\":198,\"ShopID\":\"237\",\"MasterID\":\"237\",\"MeasureUnit\":\"次\",\"Specials\":0,\"IsShelf\":0,\"FreightTemplateID\":null,\"Id\":\"14099782024565760\",\"LAY_TABLE_INDEX\":4},{\"GoodsID\":\"20190124202652\",\"GoodsName\":\"是是是\",\"NameCode\":\"SSS\",\"GoodsClass\":\"13659603389480960\",\"GoodsType\":1,\"Price\":11,\"PriceUnit\":0,\"PriceNum\":0,\"XPrice\":1,\"Images\":null,\"IsPoint\":0,\"PointType\":0,\"MinDiscount\":0,\"IsDiscount\":0,\"Remark\":null,\"IsDelete\":0,\"IsGift\":0,\"ExchangePoint\":0,\"CreateTime\":20190124202657,\"CompID\":198,\"ShopID\":\"237\",\"MasterID\":\"237\",\"MeasureUnit\":\"1\",\"Specials\":0,\"IsShelf\":0,\"FreightTemplateID\":null,\"Id\":\"14097527869279232\",\"LAY_TABLE_INDEX\":5},{\"GoodsID\":\"699\",\"GoodsName\":\"自助烤肉\",\"NameCode\":\"ZZKR\",\"GoodsClass\":\"13819785158099968\",\"GoodsType\":1,\"Price\":50,\"PriceUnit\":0,\"PriceNum\":0,\"XPrice\":50,\"Images\":\"/FileSys/MemPhoto/198/20190114153729870.jpg\",\"IsPoint\":1,\"PointType\":800,\"MinDiscount\":0,\"IsDiscount\":0,\"Remark\":null,\"IsDelete\":0,\"IsGift\":0,\"ExchangePoint\":0,\"CreateTime\":20190114153730,\"CompID\":198,\"ShopID\":\"237\",\"MasterID\":\"237\",\"MeasureUnit\":null,\"Specials\":0,\"IsShelf\":0,\"FreightTemplateID\":null,\"Id\":\"14083087561366528\",\"LAY_TABLE_INDEX\":6},{\"GoodsID\":\"20190114153056\",\"GoodsName\":\"积分衣服\",\"NameCode\":\"JFYF\",\"GoodsClass\":\"13819785158099968\",\"GoodsType\":1,\"Price\":0,\"PriceUnit\":0,\"PriceNum\":0,\"XPrice\":0,\"Images\":\"/FileSys/GoodsIMG/198/20190114154132974.png\",\"IsPoint\":0,\"PointType\":0,\"MinDiscount\":0,\"IsDiscount\":0,\"Remark\":\"%3Cp%3Enull%3C/p%3E\",\"IsDelete\":0,\"IsGift\":1,\"ExchangePoint\":500,\"CreateTime\":20190114153221,\"CompID\":198,\"ShopID\":\"237\",\"MasterID\":\"237\",\"MeasureUnit\":\"1\",\"Specials\":0,\"IsShelf\":0,\"FreightTemplateID\":null,\"Id\":\"14083082487470080\",\"LAY_TABLE_INDEX\":7},{\"GoodsID\":\"20190114152247\",\"GoodsName\":\"积分裤子\",\"NameCode\":\"JFKZ\",\"GoodsClass\":\"13819785158099968\",\"GoodsType\":1,\"Price\":0,\"PriceUnit\":0,\"PriceNum\":0,\"XPrice\":0,\"Images\":null,\"IsPoint\":1,\"PointType\":800,\"MinDiscount\":0,\"IsDiscount\":0,\"Remark\":null,\"IsDelete\":0,\"IsGift\":1,\"ExchangePoint\":0,\"CreateTime\":20190114152321,\"CompID\":198,\"ShopID\":\"237\",\"MasterID\":\"237\",\"MeasureUnit\":\"1\",\"Specials\":0,\"IsShelf\":0,\"FreightTemplateID\":null,\"Id\":\"14083073653020672\",\"LAY_TABLE_INDEX\":8},{\"GoodsID\":\"20190114151536\",\"GoodsName\":\"裤子\",\"NameCode\":\"KZ\",\"GoodsClass\":\"13819785158099968\",\"GoodsType\":1,\"Price\":0,\"PriceUnit\":0,\"PriceNum\":0,\"XPrice\":0,\"Images\":null,\"IsPoint\":0,\"PointType\":0,\"MinDiscount\":0,\"IsDiscount\":0,\"Remark\":null,\"IsDelete\":0,\"IsGift\":1,\"ExchangePoint\":500,\"CreateTime\":20190114151658,\"CompID\":198,\"ShopID\":\"237\",\"MasterID\":\"237\",\"MeasureUnit\":\"1\",\"Specials\":0,\"IsShelf\":0,\"FreightTemplateID\":null,\"Id\":\"14083067377571840\",\"LAY_TABLE_INDEX\":9}]"; var GoodsData = JSON.parse(GoodsDataStr); /** * 页面加载时执行 */ $(function () { console.table(GoodsData); /** * List1数据表格渲染(商品列表) */ var ListTable1 = table.render({ data:GoodsData, elem: '#List1', cellMinWidth: 95, //height: 'full-190', height: '460', minheight:430, page: true, limit: 10, limits: [10, 20, 30, 40], done: function (res) { if (res.rows && res.rows.length == 1) { var data = res.rows[0]; GoodsList_onDblClickRow(data); } }, cols: [ [ { field: 'GoodsID', title: lan.cpbm, align: 'left' }, { field: 'NameCode', title: lan.cpjm, align: 'left' }, { field: 'GoodsName', title: lan.cpmc, align: 'left' }, { field: 'XPrice', title: lan.ckjj, align: 'right', templet: function (d) { return "<span style='color:red'>￥" + d.XPrice + "</span>"; } }, { field: 'IsGift', title: lan.lpbz, align: 'center', templet: function (d) { var _fm = '<div class="padding_top4 padding_left5">'; _fm += d.IsGift == 1 ? '<i class="layui-icon layui-icon-ok" title=' + lan.lp + '></i>' : '<i class="layui-icon layui-icon-close" title=' + lan.flp + '></i>'; _fm += "</div>"; return _fm; } } ] ] }); /** * List2数据表格渲染(购物车) */ var ListTable2 = table.render({ data:goodsData, elem: '#List2', cellMinWidth: 95, //height: 'full-190', height: '460', minheight:430, page: true, limit: 10, limits: [10, 20, 30, 40], cols: [ [ { field: 'GoodsID', title: lan.spbh }, { field: 'GoodsName', title: lan.spmc }, { field: 'Qty', title: lan.sl, edit: 'text' }, { field: 'Price', title: lan.dj, edit: 'text' }, { field: 'Money', title: lan.je }, { title: lan.cz, align: "center", fixed: 'right', templet: function (d) { var html = '<a class="layui-btn layui-btn-xs layui-btn-danger" lay-event="delet">删除</a> '; return html; } } ] ], done: function (res) { $("#List2").siblings().find("td").each(function () { if ($(this).attr("data-edit") == 'text') { var num = $(this).find("div").text(); $(this).append('<input class="layui-input layui-table-edit" value="' + num + '">') } }) } }); /** * 监听商品列表'行'单击事件 */ table.on('row(List1)', function (obj) { var data = obj.data; var isNew = true; var vKey = data.GoodsID; //产品编码 //遍历购物车，是否存在产品；存在，数量+1 计算金额 for (var i = 0; i < goodsData.length; i++) { var tRow = goodsData[i]; if (vKey == tRow.GoodsID) { tRow.Qty = parseInt(tRow.Qty) + 1; tRow.Money = accMul(tRow.Qty, tRow.Price,2); isNew = false; break; } } //判断当前数据是否为新增数据 if (isNew) { var tmpRow = {}; tmpRow.Id = data.Id; tmpRow.GoodsID = data.GoodsID; tmpRow.GoodsName = data.GoodsName; tmpRow.Price = data.XPrice; tmpRow.Qty = 1; tmpRow.Money =(data.XPrice).toFixed(2); tmpRow.SalesCode = ""; goodsData.push(tmpRow); } //console.log(goodsData); /** * 开始刷新购物车 */ shoppingCartRefresh(); }); /** * 监听购物车行删除事件 */ table.on('tool(List2)', function (obj, index) { var data = obj.data; if (obj.event === 'delet') { for (var i = 0; i < goodsData.length; i++) { var gd = goodsData[i]; if (data.GoodsID == gd.GoodsID) { goodsData.splice(i, 1); } } /** * 开始刷新购物车 */ shoppingCartRefresh(); } }); /** * 购物车行编辑事件 */ table.on('edit(List2)', function (obj) { var data = goodsData; for (var i = 0; i < data.length; i++) { if (obj.data.Id == data[i].Id) { if (isNaN(data[i].Qty) || data[i].Qty < 0) { data[i].Qty = 0; } if (isNaN(data[i].Price) || data[i].Price < 0) { data[i].Price = 0; } data[i].Qty = Number(data[i].Qty); //数量:声明数字类型 data[i].Price = parseFloat(data[i].Price).toFixed(2); //金额:声明小数类型 data[i].Money = accMul(data[i].Qty, data[i].Price,2); //计算总金额:保留2位小数 } } /** * 开始刷新购物车 */ shoppingCartRefresh(); }); /** * 购物车刷新函数 */ function shoppingCartRefresh(){ var TotalQty = 0; var TotalMoney = 0; //数据表格重载 ListTable2.reload({ data: goodsData }); //计算总数合计金额 for (var i = 0; i < goodsData.length; i++) { TotalQty = accAdd(TotalQty, goodsData[i].Qty); TotalMoney = (accAdd(TotalMoney, parseFloat(goodsData[i].Money))).toFixed(2); } // console.log("总数量:"+TotalQty); // console.log("总金额:"+TotalMoney); $("#RechargeCount_TotalQty").html(TotalQty); $("#RechargeCount_TotalMoney").html(TotalMoney); } /** * 小数加法 * @param arg1 * @param arg2 * @returns {number} */ function accAdd(arg1,arg2){ var r1,r2,m; try{r1=arg1.toString().split(".")[1].length}catch(e){r1=0} try{r2=arg2.toString().split(".")[1].length}catch(e){r2=0} m=Math.pow(10,Math.max(r1,r2)); return (arg1*m+arg2*m)/m; } /** * 小数乘法 * @param arg1 * @param arg2 * @param fix * @returns {*} */ function accMul(arg1,arg2,fix) { if(!parseInt(fix)==fix) { return; } var m=0,s1=arg1.toString(),s2=arg2.toString(); try{m+=s1.split(".")[1].length}catch(e){} try{m+=s2.split(".")[1].length}catch(e){} if(m>fix){ return (Math.round(Number(s1.replace(".",""))*Number(s2.replace(".",""))/Math.pow(10,m-fix))/Math.pow(10,fix)); }else if(m<=fix){ return (Number(s1.replace(".",""))*Number(s2.replace(".",""))/Math.pow(10,m)).toFixed(fix); }else{ return (arg1*arg2).toFixed(fix); } } }); });

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