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CORS issue while invoking custom endpoint

Question asked by kkaus on Oct 14, 2017

I am able to hit the other endpoints which are for resources/tables from the javascript code of my application from ajax but when I am trying to hit the custom endpoint I am getting the below error in the browser console.

 

Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://localhost:3000' is therefore not allowed access. If an opaque response serves your needs, set the request's mode to 'no-cors' to fetch the resource with CORS disabled.

 

I got some solutions to send below in response header but It didn't work

responseHeaders.put('Access-Control-Allow-Origin', '*');

 

do we need to do something for the custom endpoint to make it accessible from the localhost?

 

Please give your thoughts else I have to move my code to the functions from the custom endpoints.

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