P & how do you pronounce it?
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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?
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
How do I pronounce it? Jayson Pee.
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 injectio n, the original site can also be affected."
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