[...]JSON JavaScript cookies / Stoyan’s phpied.com[...]…

In these situations, the JSON parser will break attempting to evaluate key=value pairs.

Having said that, it’s generally safe to assume that the last item of the arrayified cookie will be the one we’re after. I made the following modification in my implementation:

this.data = unescape(the_cookie[the_cookie.length-1]).parseJSON();

…or, using Saurus’ JSON2 syntax:

this.data = JSON.parse(unescape(the_cookie[the_cookie.length-1]));

var prefs = {
data: {},
load: function () {
var the_cookie = document.cookie.split(‘;’);
if (the_cookie[0]) {
this.data = JSON.parse(unescape(the_cookie[0]));
}
return this.data;
},
save: function (expires, path) {
var d = expires || new Date(2030, 02, 02);
var p = path || ‘/’;
document.cookie = escape(JSON.stringify(this.data))
+ ‘;path=’ + p
+ ‘;expires=’ + d.toUTCString();
}
}

You get a javascript error with IE