JQuery uses cookies and json to easily implement the shopping cart_jquery

This article describes how jQuery uses cookies and json to implement the shopping cart function, and describes the steps and key code for jQuery to implement the shopping cart, for more information about how jQuery uses cookies and json to implement shopping cart, see the following example. We will share this with you for your reference. The details are as follows:

1. Generate a cookie to store the product's id String type

2. When adding the product id, convert the cookie into an array and check whether it is included. It does not include re-generating a new array with js push.

3. Convert the array to String and store it with cookies.

The following describes how jquery operates on cookies and JSON.

$. Cookie ("cart", "ids", {expires:-7, path: "/"}) // store the cookie for 7 days if ($. cookie ("cart") = undefined) {// undefined does not exist} var cartArr = new Array (); $. parseJSON ($. cookie ("cart"); // converts it to an array cartArr. push (id); // The new array JSON. stringify (cartArr); // it seems that the array in the browser is converted into json