javascript - Can I use jq ajax to get data from different domains?

Question

Can I use jq ajax to obtain data from different domains? Is it okay to use ajax directly instead of jsonp?
What do I need to do with the backend?

Answer 1

jsonp also requires some work on the backend. Basically, if it involves cross-domain, it requires some cooperation from the backend.

http://www.cnblogs.com/2050/p...

You can look at cross-domain related information. You can choose different solutions for complete cross-domain and cross-subdomain.

If you only support modern browsers, you can consider cors, which will be more convenient.

Answer 2

You need to fill in the relevant cross-domain permission header information in the background. . . .