Difference between dataType jsonp and JSON

Question

I download Jquery UI autoload, looking to remote-jsonp.html. This is ajax function but i open console.. I can\'t see any request in my console...

What is difference

Answer 1

dataType: jsonp for cross-domain request, that means request to different domain and dataType: json for same domain-same origin request.

Loads in a JSON block using JSONP. Adds an extra "?callback=?" to the end of your URL to specify the callback. Disables caching by appending a query string parameter, "_=[TIMESTAMP]", to the URL unless the cache option is set to true.

Read about same origin policy

Read more about jQuery AJAX

Answer 2

With JSONP you shouldn't see an ajax request if that's what you're looking for. You should however see a request for the resource because JSONP is used for cross domain calls to pull in data from different domains.

It returns your JSON data wrapped in a function name. jQuery handles the function name behind the scenes and passes the data into your success handler. The data is loaded by dynamically creating a script element with the src attribute pointing to the service being called and then attached to the browser's DOM. Then the browser makes a request to the resource and the web service responds with the callback function and data.