Скачать или смотреть ASP Net Core Pills - Fix Cross-Origin Resource Sharing (CORS) when fetching from javascript

Did you get an error similar to the following?
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Access to fetch at 'https://localhost:5001/weatherforecast' from origin 'null' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource. If an opaque response serves your needs, set the request's mode to 'no-cors' to fetch the resource with CORS disabled.
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On this quick asp.net core video pill we see how easy is to fix it, within 2 minutes you'll be ready to continue developing your web api and test from any or specific origin.
This video as been recorded with aspnet core 3.1 (netcoreapp3.1)

== Resources ==
Official Microsoft Docs - http://bit.ly/2tCqEro