layui使用数据表格实现购物车功能

时间:2021-04-03 人气:0

html部分

<!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" >
 <!--角标-->
 <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">
  <h3 class="layui-timeline-title">使用方法</h3>
  <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 style="color: red;margin-right: 15px" id="RechargeCount_TotalQty">---</span>
  <span>合计金额:</span><span style="color:red;margin-right: 20px" id="RechargeCount_TotalMoney">---</span>
 </div>
 </div>
</body>
</html>

css部分

*{
 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;
}

js部分

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);
  }
 }
 
 });
 
});

功能核心知识：

通过一个全局数组来存储，点击商品后，拿到的商品信息，用数据来驱动购物车表格显示。

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