Detailed explanation of the steps for using jQuery+JSONP cross-domain requests

This time I will bring you a detailed explanation of the steps for using jQuery JSONP cross-domain request. What are the precautions for using jQuery JSONP cross-domain request? Here is the actual combat Let’s take a look at the case.

JSONP(JSON with Padding) is a "usage pattern" of JSON that can be used to solve the problem of cross-domain data access by mainstream browsers. Due to the same-origin policy, generally located in The web page of server1.example.com cannot communicate with a server that is not server1.example.com, and HTML The