JSON2 update

[niallkennedy]

Douglas Crockford moved ​JSON2 to GitHub. The latest file is dated 2011-02-23 vs. the WP Core file dated 2009-08-17.

latest JSON2

I'm not so sure we need this. WordPress 3.2 will require PHP 5.2, which includes JSON. The 3.1 point releases wouldn't include this so, perhaps we should focus on removing the JSON lib from the WP code base.

Oops, I think I commented without understanding what this was for...

The JSON2 library is a JavaScript library to match the ECMAScript 5 compliant native JSON object included in most modern browsers.

If a piece of JavaScript code would like to interpret a string as a JavaScript object it can pass the string to JSON.parse. A JavaScript object may be converted into a string through the JSON.stringify function.

See also:

• ​ECMA 262 sections 15.12.2 (parse) and 15.12.3 (stringify).
• ​Using Native JSON in the Mozilla Developer Center.

JavaScript executes on the client-side; it is separate from server-side PHP functions ​json_decode and ​json_encode. A widget may want to retrieve JSON from a remote server and interpret the results, all via JavaScript without affecting the page cache. I might also care about a request carrying cookie data (e.g. Facebook, Twitter) for the requested domain or add data to the page that has changed since the initial page load (e.g. 2 new comments).

Language	string to object	object to string
JavaScript	JSON.parse()	JSON.stringify()
PHP	json_decode()	json_encode()

Yep, this is good.

On the other hand, Services_JSON will be dying a slow and painful death.

Yeah, that is what I get for not paying attention and commenting without looking at the patch. </embarrassment>

(In [17679]) Update json2.js, props niallkennedy, fixes #16669