JSON

JSON is just easier to use than XML

Thursday, June 23rd, 2011 | Business | No Comments

Saw a post at mongolab about JSON, Why is JSON so popular?  Developers want out of the syntax business.

He’s right, JSON is popular not just because it’s “more efficient” at transferring data, but it’s easier to manipulate and use.

An excerpt:

There is a reason why JSON is becoming very popular as a data exchange format (more important than it being less verbose than XML): programmers are sick of writing parsers! But “wait”, you say – “surely there are XML parsers available for you to use so that you don’t have to roll your own…”. Yes, there are. But while XML parsers handle the low-level syntactic parsing of XML tags, attributes, etc…, you still need to walk the DOM tree or, worse, build one yourself with nothing but a SAX parser (Objective-C iPhone SDK I’m looking at you!).

Check out the article, it’s short and to the point.

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Help: IE7 won’t load my JSON but IE8 will – Using a JSON Validator

Monday, March 8th, 2010 | Business | 2 Comments

I just ran into this issue, and found surprisingly little documentation.  My JSON request wasn’t returning.  I was using the jQuery “getJSON” method to send the request out.  Nothing was coming back.

› Continue reading

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Introduction to JSON (JavaScript Object Notation)

Wednesday, February 18th, 2009 | Business, Tutorials | 3 Comments

JSON, JavaScript Object Notation, is a very useful tool for AJAX developers (and many others I’m sure).

XML is fairly difficult for JavaScript to parse out.  It also includes quite a bit of infrastructure overhead in certain applications.  

Implementation of JSON can be very easy, it is imported natively in JavaScript through the eval() procedure.  It is also supported by many server side languages.

Lets take a basic example of an XML statement and see it’s JSON equivalent:

XML
<book id=”123″><author>Tom Jones</author></book>

JSON
{“book”: {“id”:”123″, “author”:”Tom Jones”}}

It may seem more cryptic, but if you look, that’s just because there are fewer iterations of key words.  The compression gets extended when you implement longer arrays of data.

The best part about JSON, in my opinion, is the speed increase you get when using it in javascript.  Please implement something in XML and JSON with the same data, you will notice a significant performance increase.

JSON is easy to consume in JavaScript:

objJSON = eval(jsonDataFeed);

You can access data (using our example earlier):

alert(objJSON.book.id);
alert(objJSON.book.author);

Server side implementation can be quite simple as well:

$dataObject = array();
$dataObject["book"] = array();
$dataObject["book"]["id"] = 123;
$dataObject["book"]["author"] = "Tom Jones";
echo (json_encode($dataObject));

Ask any questions in the comments below.  

Here are some articles to continue your exploration of JSON:

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