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This article brings you a summary (code) of cross-domain solutions. It has certain reference value. Friends in need can refer to it. I hope it will be helpful to you. .
Same origin policy: the protocol, domain name, and port are all the same.
Non-original restriction:
Cookie, localStorage, and indexDB cannot be read.
DOM cannot be obtained.
The AJAX request cannot be sent.
Solution:
1. JSONP
Principle: Request JSON data from the server by dynamically adding a