How to fix a cross-domain request?

Question

Denver

I'm trying to make a cross domain request. In the console I see the following: No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin ' localhost ' is therefore not allowed access.

at the same time, when writing AJAX parameters, crossDomain:true is indicated
How to fix it?

Answer 1

It is not that simple. A cross-domain request is not just like that, they added one parameter and everything worked, alas, the security rules directly prohibit this.
For such a request to work, you need to have permission from that side. Learning CORS .
There is another easier option, jsonP requests . But again, there must be some kind of support from the server.

Answer 2

no way

Answer 3

Make a request to your backend, which will forward the request to another domain and send it back to you.

Answer 4

a request to yourself, and there, through curl, the request to the right place

Answer 5

You need to look at what is written in the response header from the server in the field: Access-Control-Allow-Origin
and grant access to the localhost domain if the requested resource is yours.
Otherwise, on the client side without the consent of the requested resource, there is no way to do this and you will have to use cURL (or a similar mechanism) on the server side.