jquery save json data object in cookie

How do I save JSON data in a cookie?

My JSON data looks like this

$("#ArticlesHolder").data('15', {name:'testname', nr:'4',price:'400'});
$("#ArticlesHolder").data('25', {name:'name2', nr:'1', price:'100'});
$("#ArticlesHolder").data('37', {name:'name3', nr:'14', price:'60'});

And I want to do something like

var dataStore =开发者_运维知识库 $.cookie("basket-data", $("#ArticlesHolder").data());

and to retrieve the data i want to load it into $("#ArticlesHolder") like

$.each($.cookie("basket-data"), function(i,e){
 $("#ArticlesHolder").data(i, e);
});

does anyone know if I'm on the right track or should this be done in some other way? Simply put, how do i put and pull json data from a cookie?

You can serialize the data as JSON, like this:

$.cookie("basket-data", JSON.stringify($("#ArticlesHolder").data()));

Then to get it from the cookie:

$("#ArticlesHolder").data(JSON.parse($.cookie("basket-data")));

This relies on JSON.stringify() and JSON.parse() to serialize/deserialize your data object, for older browsers (IE<8) include json2.js to get the JSON functionality. This example uses the jQuery cookie plugin

Now there is already no need to use JSON.stringify explicitly. Just execute this line of code

$.cookie.json = true;

After that you can save any object in cookie, which will be automatically converted to JSON and back from JSON when reading cookie.

var user = { name: "name", age: 25 }
$.cookie('user', user);
...

var currentUser = $.cookie('user');
alert('User name is ' + currentUser.name);

But JSON library does not come with jquery.cookie, so you have to download it by yourself and include into html page before jquery.cookie.js

use JSON.stringify(userData) to coverty json object to string.

var dataStore = $.cookie("basket-data", JSON.stringify($("#ArticlesHolder").data()));

and for getting back from cookie use JSON.parse()

var data=JSON.parse($.cookie("basket-data"))

It is not good practice to save the value that is returned from JSON.stringify(userData) to a cookie; it can lead to a bug in some browsers.

Before using it, you should convert it to base64 (using btoa), and when reading it, convert from base64 (using atob).

val = JSON.stringify(userData)
val = btoa(val)

write_cookie(val)

With serialize the data as JSON and Base64, dependency jquery.cookie.js :

var putCookieObj = function(key, value) {
    $.cookie(key, btoa(JSON.stringify(value)));
}

var getCookieObj = function (key) {
    var cookie = $.cookie(key);
    if (typeof cookie === "undefined") return null;
    return JSON.parse(atob(cookie));
}

:)

Try this one: https://github.com/tantau-horia/jquery-SuperCookie

Quick Usage:

create - create cookie

check - check existance

verify - verify cookie value if JSON

check_index - verify if index exists in JSON

read_values - read cookie value as string

read_JSON - read cookie value as JSON object

read_value - read value of index stored in JSON object

replace_value - replace value from a specified index stored in JSON object

remove_value - remove value and index stored in JSON object

Just use:

$.super_cookie().create("name_of_the_cookie",name_field_1:"value1",name_field_2:"value2"});
$.super_cookie().read_json("name_of_the_cookie");