To improve user experience “echo” features has been created. This allows to test XHR requests, add javascript files, create workers - all from one fiddle, so it is more transparent for the user reading the code. XHR requests are split to HTML, JSON, JSONP and XML. Gist and github responses are similar to the echo feature and go nicely in pair with storing fiddles in gist and github.
URL: /echo/html/
Data has to be provided via POST
URL: /echo/json/
Data has to be provided via POST
URL: http://jsfiddle.net/echo/jsonp/
Data has to be provided via GET. jsFiddle will respond all data given in request. It uses URL with host and protocol as it’s loaded from different domain. callback and delay will not be returned.
URL: /echo/xml/
Data has to be provided via POST
URL: http://jsfiddle.net/echo/js/?js=
Data has to be provided via GET. jsFiddle will respond with a JavaScript file provided in request. It might be used from a “different” domain. It has to be loaded from the fiddle - calling it directly will result in a 404 error.
Please see at Github Response