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请求首部
Access-Control-Request-Method 出现于 preflight request （预检请求）中，用于通知服务器在真正的请求中会采用哪种 HTTP 方法。因为预检请求所使用的方法总是 OPTIONS ，与实际请求所使用的方法不一样，所以这个首部是必要的。| Header type | Request header |
|---|---|
| Forbidden header name | yes |
语法
Access-Control-Request-Method: <method>
指令
示例
Access-Control-Request-Method: POST
规范
| Specification | Status | Comment |
|---|---|---|
| Fetch Access-Control-Request-Method |
Living Standard | Initial definition. |
浏览器兼容性
The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Update compatibility data on GitHub
| Desktop | Mobile | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Basic support | Chrome Full support 4 | Edge Full support 12 | Firefox Full support 3.5 | IE Full support 10 | Opera Full support 12 | Safari Full support 4 | WebView Android Full support 2 | Chrome Android Full support Yes | Edge Mobile Full support Yes | Firefox Android Full support 4 | Opera Android Full support 12 | Safari iOS Full support 3.2 | Samsung Internet Android Full support Yes |
Legend
- Full support
- Full support