An error occurred as the requested resource does not have the necessary 'Access-Control-Allow-Origin' header. The response code received was 403

I am working with Angular products services that make calls to the "http://jsonplaceholder.typicode.com/posts" URL using the HttpClient method.

However, I am encountering the error message "No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://localhost:5700' is therefore not allowed access. The response had HTTP status code 403."

Based on my understanding of the error, it seems like I need to set headers, but since it's a public GET API, I believe I shouldn't need to set headers for this.

Any help or insights would be greatly appreciated. Thank you.

javascriptangulartypescript

Answer №1

The browser throws an error that can only be fixed on the server-side. The endpoint does not have Access-Control-Allow-Origin set in the response headers, making it inaccessible from other domains within a browser, such as 'http://localhost:5700. The headers include:

access-control-allow-credentials →true
cache-control →public, max-age=14400
cf-cache-status →HIT
cf-ray →3c4f9790845896e8-FRA
connection →keep-alive
content-encoding →gzip
content-type →application/json; charset=utf-8
date →Tue, 28 Nov 2017 19:04:16 GMT
etag →W/"6b80-Ybsq/K6GwwqrYkAsFxqDXGC7DoM"
expires →Tue, 28 Nov 2017 23:04:16 GMT
pragma →no-cache
server →cloudflare-nginx
transfer-encoding →chunked
vary →Accept-Encoding
via →1.1 vegur
x-content-type-options →nosniff
x-powered-by →Express

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