What is JSON-P & how do you pronounce it? [duplicate]

Question

Possible Duplicate:
Please explain JSONP

Related question: Explanation and usage of JSONP.

I know what JSON is but what is JSON-P?

How do you pronounce JSON-P?

Answer 1

JSONP or "JSON with padding"

It helps grabbing JSON from external domains. It’s all about a cleaner way to get data objects (and other things) from the external domain. Its a workaround for cross domain JavaScript issues. Also supported by jQuery.

Technical details

Answer 2

How do I pronounce it? Jayson Pee.

Answer 3

JSON-P = JSON with Padding

http://ajaxian.com/archives/jsonp-json-with-padding

http://en.wikipedia.org/wiki/JSON#JSONP

From Wikipedia:

"JSONP or "JSON with padding" is a JSON extension wherein a prefix is specified as an input argument of the call itself. This padding prefix is typically the name of a callback function, but may also be a variable assignment, an if statement, or any other Javascript statement prefix. The original proposition appears to have been made in the MacPython blog in 2005 [16] and is now used by many Web 2.0 applications such as Dojo Toolkit Applications, Google Toolkit Applications[17] and Web Services. Further extensions of this protocol have been proposed by considering additional input arguments as, for example, is the case of JSONPP[18] supported by S3DB web services. Because JSONP makes use of script tags, calls are essentially open to the world. For that reason, JSONP may be inappropriate to carry sensitive data.[19] Including script tags from remote sites allows the remote sites to inject any content into a website. If the remote sites have vulnerabilities that allow JavaScript injection, the original site can also be affected."

Answer 4

See Douglas Crockford’s The JSON Saga where he mentions another pronunciation for JSON at about 7:45.

Answer 5

Actually, while the other answers are good, JSON-P does not necessitate the use of JSON. You can use whatever data format you like, as long as it follows the same idea as JSON-P. It refers more to the process of supplying a callback to the server, which will be used in the JavaScript code which is returned in the response.