Tom Robinson has built a useful utility, JSON Diff, which gives you a graphical look at the difference.

Changed portions are displayed in yellow. Additions are displayed in green. Deletions are displayed in red.
The visualization is live itself, so you can move around the nodes using the triangles.

…

Today is the kick off of the Velocity performance conference, and we are going to see a fair share of performance news over the next day or two.
To start out, Bill Scott (Rico/ex-Yahoo/now Netflix) has announced a new Firebug plugin, Jiffy that adds a new tab showing fine grained performance data. You want to know the time between …

Microsoft launched Silverlight 2 beta 2 last Friday (which seemed a bit strange….).
I saw this on the same day as some Adobe folks showed me an old thread that showed MLB.tv sneaking a context menu saying “About Silverlight” into the Flash version What is new in the latest beta? Danny Thorpe is looking forward to …

To my amazement I couldn’t find any straightforward pieces of code actually doing this. All I could find was the usual pretty printed JSON outputs. So I rolled up my sleeves and did some Javascript hacking myself.

The decription of how to use json object…

Article looking at the use of PHP Editor and PHP Debugger for developing applications using PHP, JavaScript and JSON. These applications employ PHP scripts to serve the responses in JSON to JavaScript client side requests made via Dynamic Script Injection or AJAX .

I’m tired of hearing the “XML vs JSON” debate. Why not just make them compatible. Why would I want to convert XML to JSON. Mainly because JSON is easier to use in JavaScript - since it is “JavaScript Object Notation”. Most of the content/data available on the web is in XML format and not JSON, so converting XML to JSON …

DHTMLX have just announced the latest update of its dhtmlxSuite, a professional Ajax components toolkit for web UI. The major updates concern Grid and Treegrid components and include a large number of new features and improvements, including the ability to load data from JSON and JS-array, smart rendering and paging support for hierarchical data grids. …

These lectures are given by Douglas Crockford who is a senior JavaScript Architect at Yahoo!. He is well known for his work in introducing JavaScript Object Notation (JSON).

inputEx is “a javascript framework to build fields and forms” created by Eric Abouaf. The framework uses a JSON format to describe a form, such as:
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{

        “fields” : [

                {

                        “type” : “group”,

      …

Kris Zyp of Sitepen has released Persevere:

An open source set of tools for persistence and distributed computing using intuitive standards-based JSON interfaces of HTTP REST, JSON-RPC, JSONPath, and HTTP Channels. The core of the Persevere project is the Persevere Server. The Persevere server includes a Persevere JavaScript client, but the standards-based interface is intended to be …

Flickr, Viddler, Qik, Pownce and Revision3 are the first services to support oEmbed, an easy way to allow embeding media from a certain URL in a third party site.
From the oEmbed site:

oEmbed is a format for allowing an embedded representation of a URL on third party sites. The simple API allows a website to display embedded content …

Is this JavaScript that would run in a current browser?
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function square_of(x) x * x;

players.sort(function(x,y) y[’score’] - x[’score’]);

Yup. This is JavaScript 1.8 and 1.7, also known as Pythonizing Javascript Tiago Silveira discusses these lambda expressions, as well as Generators:
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function actions() {

  for (f in document.forms) {

    yield document.forms[f].action

  }

}

list comprehensions, let:
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Oliver Steele is doing great work, and he has just released a gem called JCON which stands for JavaScript Conformance. It tests JSON values to make sure that they are valid for the new world of ECMAScript 4 type definitions (e.g. new { x:int, y:string }( 3, “foo” ) ).
Usage
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type = JCON::parse "[string, int]"
type.contains?([‘a’, …

This is from the “wow, really?” department. HotRuby is an implementation of Ruby in JavaScript!
The way it works is that a HotRuby “VM” takes the resulting output from YARV and can grok it via JSON:
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VM::InstructionSequence.compile(cgi[’src’], "src", 1, OutputCompileOption).to_a.to_json

Thus, you can embed Ruby by doing something like this:
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HTML:

        …

Ajax-style server calls don’t necessarily require XMLHttp requests. This article shows you how to use Yahoo pipes, JavaScript Object Notation (JSON), and dynamic script tags to convert data from XML to JSON, to side-step the need for proxying.

Douglas Crockford, the creator of JSON (JavaScript Object Notation) (define) and a senior JavaScript Architect at Yahoo (NASDAQ:YHOO) is convinced that the Web is broken.

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{target:”/jsonrpc”, // this defines the URL to connect for the services

 transport:”POST”, // We will use POST as the transport

 envelope:”JSON-RPC-1.2″, // We will use JSON-RPC

 SMDVersion:”2.0″,

 services: {

   add : { // define a service to add two numbers

   parameters: [

     {name:”a”,type:”number”}, // define the two parameters

     {name:”b”,type:”number”}],

   returns:{”type”:”number”}

 },

 foo : {   // nothing is required to be defined, …

Yahoo’s Tom Coates today finally released FireEagle at ETech 2008. Seeing Tom in the office for quite a while getting everything ready makes me very happy to announce that it is out and invite you to come along and sign up for the beta to start testing and - even more importantly - developing applications for it. …

Christopher Lenz has been spending time on the CouchDB project. He got lulled over when CouchDB went to JSON.
He talks about how “CouchDB is pretty well positioned for storing and querying XML data in addition to JSON” via the E4X support that it gets out of the box as it uses SpiderMonkey.
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by_lang: function(doc) {
  …

James Newton-King has quickly released a new version of Json.NET that has a new easier syntax for querying and and creating JSON.
Creating JSON
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JObject o = JObject.FromObject(new
{
  channel = new
  {
    title = “James Newton-King”,
    link = “http://james.newtonking.com”,
    description = “James Newton-King’s blog.”,
  …

a JavaScript serialize function that’s just like PHP

JavaScript Object Notation, or JSON for short, is a lightweight data-interchange format which may prove to be a viable alternative to XML for IT developers. It’s easy to read and write by people as well as for machines to parse and generate.

Adrien Friggeri has been playing with pattern matching in JavaScript a la functional programming.
Take a look at the examples such as writing a factorial via matching:
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function fact (n) {
  return m.match(n,
  [
    [    0  , function ( ) { return 1                  …

JSON is the perfect format for passing data from a server to JavaScript. With the prototype.js the JSON string sent by the server is automatically evaluated to a native JavaScript datatype. In order to do this you need to pass the data back with a content-type of application/json.

James Newton-King has posted a new bit of code called LINQ to JSON which is a .NET LINQ style API over JSON.
For example, here is how you could get out categories and how often they are used:
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var categories =
  from c in rss.PropertyValue<jobject>(”channel”)
              .PropertyValue<jarray>(”item”)
        …

Quick and easy guide to understand how JSON (JavaScript Object Notation) works

John is at it again, writing a piece on recent news surrounding JSON.
He links to an updated library by Douglas Crockford, …

A javascript library that allows access to JSON data via SQL syntax, for example: jsonsql.query(”select title,url from json.channel.items where (category==’javascript’ || category==’vista’) order by title,category asc limit 3″,json);

Ayuda de como utilizar JSON en javascript de una forma muy simple

Nicholas C. Zakas wanted to keep JSON out of JavaScript. He has patterned a new form of JSON support on E4X and wrote it up.
Nichole wants:

The addition of two new global types: JSON and JSONList. JSON represents a JSON object while JSONList represents a JSON array.
Both types have a toJSONString() method that correctly encodes an object into a …

Trent Richardson has released JsonSQL, a JavaScript library that allows you to muck around with JSON as though it is a datastore:
The API
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jsonsql.query(”select * from json.channel.items order by title desc”, json);

jsonsql.query(”select title,url from json.channel.items where (category==’javascript’ || category==’vista’) order by title,category asc limit 3″, json);

Usage

Only Select statements are supported
The requested fields may be a “*” or …

Learn what JSON is and how to use it

CouchDB has been getting people re-energized about DB stuff recently. Some got gung-ho about the OODBMS and that fizzled and people went back to the “ug, I guess we just do the SQL thing and be done with it… and maybe use an ORM if we really hate it”.
Then the Couch came along and had us …

UIDL (User Interface Description Language) aims to create a scriptable, JavaScript based language for expressing complex user interfaces. The main features of a UIDL page are the ability to create complex user interfaces (using Swing based widgets) and to communicate asynchronously with server based objects (using the JSON-RPC protocol).

This post gets to the meat and potatoes and shows code example of how to program in Object Oriented JavaScript and why it is useful. It also touches on how Object Oriented Programming differs from Java and C++ (i.e. class structure). The post also shows an example of how this would pertain to JSON.

This is an example that uses Meteora (http://meteora.astrata.com.mx), a modified version of Mootools (http://mootools.net), to illustrate how easy is to develop Buzzword Compliant (A.K.A. AJAX) web applications without having to write Javascript.

I love watching Brendan Eich speak. You know that before long you will be deep into a topic, and if you slip up for a minute you will be hopelessly behind. You have to listen closely. Even if you do, you will probably think that you missed a lot of it.
Brendan has posted his slides …

David Hurth of Ajaxonomy.com shows the code to create a JavaScript object that is used to create JSON without using eval.

The W3C has a new proposal titled Enabling Read Access for Web Resources which defines access control primitives to be used for cross domain XHR.
You can set control via a HTTP header:
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Access-Control: allow <*.example.org> exclude <*.public.example.org>

or an XML processing instruction:
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XML:

<?access-control allow=”allow.example.org” deny=”deny.example.org”?>

so no cross_domain.xml.
Kris Zyp has written up his thoughts on …

This is not one of those dummy “idiot’s guides”, despite the article is called “JavaScript coding basics” it covers such advanced topics as:* effective work with JS objects;* JSON Java Scriptt Object Notation);* DOM operations with comparison DOM against innerHTML;* events and different ways to create and attach them;* fast JS code.

Mark Forster is a fan of IoC from his days in Spring-land. He found that he was “writing endless amount of code to just instantiate objects and wiring up dependencies in these objects” and decided that what was in order was Squirrel IoC.
To see it in action, we can look at a simple example. There are three files at …

We got our first look at a rewritten Tiny MCE 3 today.

From a pure feature point of view, this release might not be very impressive, but if you are interested in JavaScript and do a lot of custom development, this is the release you have been waiting for. One of the main focuses for the new 3.x branch is …

The Pownce team released version 1 of the Pownce API yesterday. The API allows for various methods of retrieving Pownce-related data such as notes, users or fans and allows for return data to be formatted as XML or JSON. Since the API will be evolving quickly, the team has also taken the added step of providing versioning for …

Flash allows to create rich web interface : very cool effects, 3D animations,data-driven websites. Actionscript,language based on ECMAScript, offers a lot of power to Flash applications.Here, we will be using Actionscript 3 to see how we can communicate with Javascript objects thru the literal notation and DOM !

php-json is an extremely fast PHP C extension for JSON (JavaScript Object Notation) serialisation. It conforms to the JSON specification.

Christian Heilmann is at it again posting an entry about a neat method of grabbing Flickr photos without having to using the Flickr API:
Here you’ll learn how to get Flickr photos into your JavaScript solutions without having to resort to using the full API. As this is a hack you will only get the latest 20 photos, if …

Kris Zyp has been plugging away on a couple of interesting JSON topics:
JSON Referencing Schemes
There has been a lot of discussion about handling referencing schemes, so Kris has gotten the various ideas and summarized them.
He takes the following object call:
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obj = {name:”foo”, child: {”name” : “bar”}};

obj.child.parent = obj;

and shows:
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// fixups scheme

{”result”:{”name”:”foo”, “child”: {”name” …

JSON must rely on JavaScript’s object notation. As such, some custom JavaScript will always be required (i.e. - no jQuery selectors). Some progress has been made in addressing the overarching need, but I maintain a high level of specificity in the following snippet.

Arthur Blake (with friends) has forked JSON-RPC-Java and has created jabsorb:

The project goal for jabsorb is to maintain (and hopefully improve) the practicality and beautiful simplicity that makes JSON-RPC-Java a great library, while also adding new common sense features, more test cases, and more documentation to make the library better for everyone.
jabsorb also aims to add more advanced …