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JSONP image data and cacheing strategies
With the new release of Intermedia Fotoficient we supplied a generic JSONP brokerage infrastructure to enable cacheing of data sets. This post shows, how it works and why it works. The problem JSONP is JSON with Padding. Padding usually means: providing the name of callback method which waits to receive the payload. As a JSONP request runs in its own SCRIPT statement, using a closure or anonymous function reference doesn't work with a naive approach and most use a temporarely available global method which is supplied in the SCRIPT-url. window.jsonpHandler.functionA = function ( dataSet ) { } ... <SCRIPT src="http://hostname/jsonphandler?data=1&jsonp=jsonpHandler.functionA"...