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请求首部 Access-Control-Request-Headers 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些请求首部。
| Header type | Request header |
|---|---|
| Forbidden header name | yes |
语法
Access-Control-Request-Headers: <header-name>, <header-name>, ...
指令
- <header-name>
- 在实际请求中将要包含的一系列 HTTP 首部，以逗号分隔。
示例
Access-Control-Request-Headers: X-PINGOTHER, Content-Type
规范
| Specification | Status | Comment |
|---|---|---|
| Fetch Access-Control-Request-Headers |
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.
| Feature | Chrome | Firefox | Edge | Internet Explorer | Opera | Safari |
|---|---|---|---|---|---|---|
| Basic Support | 4 | 3.5 | 12 | 10 | 12 | 4 |
| Feature | Android | Chrome for Android | Edge mobile | Firefox for Android | IE mobile | Opera Android | iOS Safari |
|---|---|---|---|---|---|---|---|
| Basic Support | 2.1 | (Yes) | (Yes) | 1.0 | (Yes) | 12 | 3.2 |