shoppingCart.js

/*
*/
function Product() {
var itemcode; //商品编码
var count; //数量
var type; //类型
var paramid; //参数
}
/*
添加商品
*/
function addShoppingCartProduct(itemCode, count, type, paramid) {
if (itemCode == "" || itemCode == null) {
alert("商品编号不能为空！");
return false;
}
var productList = getShoppingCartProductList();
var found = false;
var i = 0;
while (i < productList.length) {
var productInfo = productList[i];
if (productInfo.itemcode == itemCode) {
productInfo.count = productInfo.count + count;
productInfo.type = type;
productInfo.paramid = paramid;
found = true;
break;
}
i++;
}
if (!found) {
product = new Object();
product.itemcode = itemCode;
product.count = count;
product.type = type;
product.paramid = paramid;
productList.push(product);
}
localStorage.shoppingCartProductList = JSON.stringify(productList);
return true;
}
/*
取得商品
*/
function getShoppingCartProduct(itemCode) {
var productList = getShoppingCartProductList();
var i = 0;
while (i < productList.length) {
var productInfo = productList[i];
if (productInfo.itemcode == itemCode) {
return productInfo;
}
i++;
}
return null;
}
/*
取得商品列表
*/
function getShoppingCartProductList() {
if (localStorage.shoppingCartProductList == undefined || localStorage.shoppingCartProductList == "undefined" || localStorage.shoppingCartProductList == "") {
var newProductList = new Array();
localStorage.shoppingCartProductList = JSON.stringify(newProductList);
}
var productList = JSON.parse(localStorage.shoppingCartProductList);
return productList;
}
/*
清空购物车
*/
function clearShoppingCart() {
var productList = new Array();
localStorage.shoppingCartProductList = JSON.stringify(productList);
}
/*
删除商品
*/
function removeShoppingCartProduct(itemCode) {
var productList = getShoppingCartProductList();
var i = 0;
while (i < productList.length) {
var productInfo = productList[i];
if (productInfo.itemcode == itemCode) {
productList.splice(i, 1);
break;
}
i++;
}
localStorage.shoppingCartProductList = JSON.stringify(productList);
}
/*
修改商品数量
*/
function updateShoppingCartProduct(itemCode, count) {
var productList = getShoppingCartProductList();
var i = 0;
while (i < productList.length) {
var productInfo = productList[i];
if (productInfo.itemcode == itemCode) {
productInfo.count = count;
break;
}
i++;
}
localStorage.shoppingCartProductList = JSON.stringify(productList);
}

作者：ylbtech 出处：http://ylbtech.cnblogs.com/ 本文版权归作者和博客园共有，欢迎转载，但未经作者同意必须保留此段声明，且在文章页面明显位置给出原文连接，否则保留追究法律责任的权利。