Cross-domain access to JSONP CORS

First, JSONP

The commonly used jquery Framework supports JSONP-mode requests, which only support the Get method, the size of the parameter is limited, and the background needs to be returned based on the JSONP request.

Where the parameter Jsonp default to Callback,jsonpcallback is a randomly generated callback function name, if HandleRequest is specified, the background parameter is returned as HandleRequest ("data").

Second, CORS

Cross-domain resource sharing cors way the browser and server know each other by customizing the HTTP header.

Server-side support for Cors is primarily supported by setting the appropriate headers:

Access-control-allow-origin: *

Access-control-allow-methods:get,post

Access-Control-Request-Headers:Origin,X-Requested-With,Content-Type,Accept

Cross-domain access to JSONP CORS