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Access-Control-Request-Method

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since ⁨2015年7月⁩.

Access-Control-Request-Method 请求标头会由浏览器在发出预检请求时使用，通知服务器在实际请求中发出时将会采用哪种HTTP 方法。此标头是必需的，因为预检请求总是采用OPTIONS 方法，这与实际请求所使用的方法并不相同。

标头类型	请求标头
禁止修改的标头	是

语法

http

Access-Control-Request-Method: <method>

http

Access-Control-Request-Method: POST

Specification
Fetch # http-access-control-request-method

This page was last modified on⁨2025年7月4日⁩ byMDN contributors.