These HTTP headers are automatically set for cross-origin requests. Once a website enables CORS, new HTTP headers are introduced which enable cross-origin requests. So if the website asp.net implements CORS then my website’s page – “A.html” can make AJAX request to B.html and read B’s HTML source code.
Thankfully there is Cross Origin Resource Sharing (CORS) which is a W3C standard that allows browsers to relax the same-origin policy. No ‘Access-Control-Allow-Origin’ header is present on the requested resource. The AJAX call will return the error message: Advanced Topics Globalization & Localizationĭue to B.html located in a different domain, the page A.html will not be able to make AJAX request due to the restriction called same-origin policy.Advanced Model Binding Model Validation.Call Web API from JavaScript Tag Helpers.Asynchronous View Component URL Routing.
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