Javascript实现购物车功能的详细代码

使用车辆自诊断功能：许多现代汽车能提供故障代码帮助 #生活技巧# #汽车保养技巧# #车辆故障自检#

var listObj = getAllData();

var table = document.getElementById("table")

var box = document.getElementById("box")

var tbody = document.getElementById("tbody");

var totalPrice = document.getElementById("totalPrice");

var allCheck = document.getElementById("allCheck");

if(listObj.length == 0) {

 box.className = "box";

 table.className = "hide";

} else {

 box.className = "box hide";

 table.className = "";

 for(var i = 0, len = listObj.length; i < len; i++) {

 var tr = document.createElement("tr");

 tr.setAttribute("pid", listObj[i].pid);

 tr.innerHTML = '<td>' +

  '<input type="checkbox" class="ck" />' +

  '</td>' +

  '<td>' +

  '<img src="' + listObj[i].pImg + '" alt="" />' +

  '</td>' +

  '<td>' +

  listObj[i].pDesc +

  '</td>' +

  '<td>' +

  '<button class="down">-</button><input type="text" value="' + listObj[i].pCount + '" readonly="readonly" /><button class="up">+</button>' +

  '</td>' +

  '<td>' +

  '￥<span>' + listObj[i].price + '</span>' +

  '</td>' +

  '<td>' +

  '￥<span>' + listObj[i].price * listObj[i].pCount + '</span>' +

  '</td>' +

  '<td>' +

  '<button class="del" >删除</button>' +

  '</td>';

 tbody.appendChild(tr);

 }

}

var cks = document.querySelectorAll("tbody .ck");

function getTotalPrice() {

 cks = document.querySelectorAll("tbody .ck");

 var sum = 0;

 for(var i = 0, len = cks.length; i < len; i++) {

 if(cks[i].checked) {

  var tr = cks[i].parentNode.parentNode;

  var temp = tr.children[5].firstElementChild.innerHTML;

  sum = Number(temp) + sum;

 }

 }

 return sum;

}

for(var i = 0, len = cks.length; i < len; i++) {

 cks[i].onchange = function() {

 checkAllChecked();

 totalPrice.innerHTML = getTotalPrice();

 }

}

allCheck.onchange = function() {

 if(this.checked) {

 for(var i = 0, len = cks.length; i < len; i++) {

  cks[i].checked = true;

 }

 } else {

 for(var i = 0, len = cks.length; i < len; i++) {

  cks[i].checked = false;

 }

 }

 totalPrice.innerHTML = getTotalPrice();

}

var downs = document.querySelectorAll(".down");

var ups = document.querySelectorAll(".up");

var dels = document.querySelectorAll(".del");

for(var i = 0, len = downs.length; i < len; i++) {

 downs[i].onclick = function() {

 var txtObj = this.nextElementSibling;

 var tr = this.parentNode.parentNode;

 var pid = tr.getAttribute("pid");

 txtObj.value = txtObj.value - 1;

 if(txtObj.value < 1) {

  txtObj.value = 1;

  updateObjById(pid, 0)

 } else {

  updateObjById(pid, -1)

 }

 tr.children[0].firstElementChild.checked = true;

 checkAllChecked();

 var price = tr.children[4].firstElementChild.innerHTML;

 tr.children[5].firstElementChild.innerHTML = price * txtObj.value;

 totalPrice.innerHTML = getTotalPrice();

 }

 ups[i].onclick = function() {

 var txtObj = this.previousElementSibling;

 var tr = this.parentNode.parentNode;

 var pid = tr.getAttribute("pid");

 txtObj.value = Number(txtObj.value) + 1;

 updateObjById(pid, 1)

 tr.children[0].firstElementChild.checked = true;

 checkAllChecked()

 var price = tr.children[4].firstElementChild.innerHTML;

 tr.children[5].firstElementChild.innerHTML = price * txtObj.value;

 totalPrice.innerHTML = getTotalPrice();

 }

 dels[i].onclick = function() {

 var tr = this.parentNode.parentNode;

 var pid = tr.getAttribute("pid")

 if(confirm("确定删除？")) {

  tr.remove();

  listObj = deleteObjByPid(pid);

 }

 if(listObj.length == 0) {

  box.className = "box";

  table.className = "hide";

 } else {

  box.className = "box hide";

  table.className = "";

 }

 totalPrice.innerHTML = getTotalPrice();

 }

}

function checkAllChecked() {

 var isSelected = true;

 for(var j = 0, len = cks.length; j < len; j++) {

 if(cks[j].checked == false) {

  isSelected = false;

  break;

 }

 }

 allCheck.checked = isSelected;

}

网址：Javascript实现购物车功能的详细代码 https://klqsh.com/news/view/211482

相关内容

详谈HTML中script标签（附代码）
小红书如何购买东西——最详细的购物攻略！
JavaScript 教程
奥特莱斯购物全攻略：深入品牌、代购指南与购物建议
掌握网上购物技巧，享受便捷与乐趣的购物体验
判断JavaScript字符串中是否含有中文字符的有效方法与实践指南
网上购物全攻略：轻松掌握购物技巧与注意事项
JavaScript decodeURI() 函数
购物流程
六大网购省钱技巧，轻松实现理性购物

随便看看