Client shopping cart operation instance implemented by jquery. cookie

This article mainly introduces jquery. the client-side shopping cart operation for cookie implementation analyzes jQuery's tips for implementing the shopping cart Function Based on cookie storage and operation data in the form of examples. For more information, see the following example. the client shopping cart Operation implemented by cookie. We will share this with you for your reference. The details are as follows:

// Cart var Cart = function () {this. count = 0; this. total = 0; this. items = new Array () ;}; // var CartItem = function () {this. id = 0; this. name = ""; this. count = 0; this. price = 0 ;}; // var CartHelper = function () {this. cookieName = "yxhCart"; this. clear = function () {var cart = new Cart (); this. save (cart); return cart;}; // Add this to the cart. add = function (id, name, count, price) {var c Art = this. read (); var index = this. find (id); // if the ID already exists, overwrite the quantity if (index>-1) {cart. total-= (cart. items [index]. count * 100) * (cart. items [index]. price * 100)/10000); cart. items [index]. count = count; cart. total + = (cart. items [index]. count * 100) * (cart. items [index]. price * 100)/10000);} else {var item = new CartItem (); item. id = id; item. name = name; item. count = count; item. price = p Rice; cart. items. push (item); cart. count ++; cart. total + = (cart. items [index]. count * 100) * (cart. items [index]. price * 100)/10000);} this. save (cart); return cart;}; // change the quantity this. change = function (id, count) {var cart = this. read (); var index = this. find (id); cart. items [index]. count = count; this. save (cart); return cart;}; // remove from cart this. del = function (id) {var cart = this. read (); var index = This. find (id); if (index>-1) {var item = cart. items [index]; cart. count --; cart. total = cart. total-(item. count * 100) * (item. price * 100)/10000); cart. items. splice (index, 1); this. save (cart) ;}return cart ;}; // find this. find = function (id) {var cart = this. read (); var index =-1; for (var I = 0; I <cart. items. length; I ++) {if (cart. items [I]. id = id) {index = I;} return in Dex ;}; // COOKIE operation this. save = function (cart) {var source = ""; for (var I = 0; I <cart. items. length; I ++) {if (source! = "") {Source + = "| $ |";} source + = this. itemToString (cart. items [I]);} $. cookie (this. cookieName, source) ;}; this. read = function () {// Read the var source set in the COOKIE =$. cookie (this. cookieName); var cart = new Cart (); if (source = null | source = "") {return cart;} var arr = source. split ("| $ |"); cart. count = arr. length; for (var I = 0; I <arr. length; I ++) {var item = this. itemToObject (arr [I]); cart. items. push (item); cart. total + = (item. count * 100) * (item. price * 100)/10000);} return cart;}; this. itemToString = function (item) {return item. id + "|" + escape (item. name) + "|" + item. count + "|" + item. price;}; this. itemToObject = function (str) {var arr = str. split ('|'); var item = new CartItem (); item. id = arr [0]; item. name = unescape (arr [1]); item. count = arr [2]; item. price = arr [3]; return item ;};};

I hope this article will help you with jQuery programming.