Subcookies V2

My Subcookies article from May the 27th of last year has proven to be my most popular bit of writing.

I have now rewritten my cookies script, fixing some issues pointed out by "C", and added some security as pointed out by Jim Thomson.

Note; for a complete rundown of the original script, read Subcookies.

The subcookiejar.fetch () method now returns an object literal (or, as the cool kids say, "JSON") if the second parameter is left undefined. This means that by doing the following...
1. // bake a new cookie
2. subcookiejar.bake ('admin', {
3. name: 'Harmen',
4. age: 23,
5. homepage: 'http://www.whatstyle.net'
6. }, 2);
8. // fetch it
9. var admin = subcookiejar.fetch ('admin');
10. Download this code: /code/subcookies_v21.txt
...you can fetch the admin's values by doing something like this:
1. alert (admin.name);
2. alert (admin.age);
3. alert (admin.homepage);
4. Download this code: /code/subcookies_v22.txt
If the second parameter is given, however, subcookiejar.fetch will return either null if the requested subcookie is not available, or just that subcookie.
Also, it is now possible to append to existing cookies. If, after executing the code above, I execute the following code...
1. subcookiejar.bake ('admin', {
2. city: 'Harderwijk',
3. country: 'The Netherlands'
4. }, 2);
5. Download this code: /code/subcookies_v23.txt
...the result will be a combined object containing both the new data and the existing data:
1. {
2. name: 'Harmen',
3. age: 23,
4. homepage: 'http://www.whatstyle.net',
5. city: 'Harderwijk',
6. country: 'The Netherlands'
7. }
8. Download this code: /code/subcookies_v24.txt
Note that you will overwrite the existing values if you use this technique.

Other changes consist purely of improving some code, comments and security checks.

As always, I'd love to hear feedback. If you have any, do let me know.
And C, sorry to keep you waiting ;).

Filed under Javascript

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