{"json_modified": "2016-10-20T03:12:19.116303", "uuid": "56e5acaf-e68e-495c-a8af-71f15de16ee1", "title": "Access-Control-Request-Method", "url": "/en-US/docs/Web/HTTP/Headers/Access-Control-Request-Method", "tags": ["Reference", "header", "CORS", "HTTP"], "translations": [], "modified": "2016-10-20T03:12:19", "label": "Access-Control-Request-Method", "localization_tags": [], "locale": "en-US", "id": 196457, "last_edit": "2016-10-20T03:12:12", "summary": "The <strong><code>Access-Control-Request-Method</code></strong> request header is used when issuing a <a class=\"glossaryLink\" href=\"/en-US/docs/Glossary/preflight_request\" title=\"preflight request: A CORS preflight request is a CORS request that checks to see if the CORS protocol is understood.\">preflight request</a> to let the server know which <a href=\"/en-US/docs/Web/HTTP/Methods\">HTTP method</a> will be used when the actual request is made. This header is necessary as the preflight request is always an <a href=\"/en-US/docs/Web/HTTP/Methods/OPTIONS\" title=\"The HTTP OPTIONS method is used to describe the communication options for the target resource. The client can specify a specific URL for the OPTIONS method, or an asterisk (*) to refer to the entire server.\"><code>OPTIONS</code></a> and doesn't use the same method as the actual request.", "sections": [{"id": "Quick_Links", "title": null}, {"id": "Syntax", "title": "Syntax"}, {"id": "Directives", "title": "Directives"}, {"id": "Examples", "title": "Examples"}, {"id": "Specifications", "title": "Specifications"}, {"id": "Browser_compatibility", "title": "Browser compatibility"}, {"id": "See_also", "title": "See also"}], "slug": "Web/HTTP/Headers/Access-Control-Request-Method", "review_tags": []}