JSON and JSONP
There’s been an interesting discussion over at JSMentors.com about JSONP and how to make it safer. This is a good thing, not least because it forced me to take a deeper look and come up with a (sort of) counter-proposal of my own.
We’ll start with an overview of JSON basics, including the EcmaScript 5 JSON API, and then discuss cross-domain JSON retrieval via JSONP. Finally I’ll introduce a simple and relatively safe JSONP framework and show how to use it to fetch tweets from the Twitter database.
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