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index.md
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---
title: Sec-Fetch-Mode
slug: Web/HTTP/Headers/Sec-Fetch-Mode
---
{{HTTPSidebar}}
**`Sec-Fetch-Mode`** 获取元数据标头表明了一个请求的模式。
| Header type | {{Glossary("Fetch Metadata Request Header")}} |
| ---------------------------------------------- | ---------------------------------------------------------------------------------------- |
| {{Glossary("Forbidden header name")}} | 只要包含前缀 `Sec-` 都属于应用程序禁止修改的 HTTP 消息头,用户代理保留全部对它们的控制权 |
| {{Glossary("CORS-safelisted request header")}} | |
## 语法
```plain
Sec-Fetch-Mode: cors
Sec-Fetch-Mode: navigate
Sec-Fetch-Mode: nested-navigate
Sec-Fetch-Mode: no-cors
Sec-Fetch-Mode: same-origin
Sec-Fetch-Mode: websocket
```
## 值
- `cors`
- : TBD
- `navigate`
- : TBD
- `nested-navigate`
- : TBD
- `no-cors`
- : TBD
- `same-origin`
- : TBD
- `websocket`
- : TBD
## 示例
暂时没有内容
## 规范
{{Specifications}}
## 浏览器兼容性
{{Compat}}
## 参见
- {{HTTPHeader("Sec-Fetch-Site")}}
- {{HTTPHeader("Sec-Fetch-User")}}
- {{HTTPHeader("Sec-Fetch-Dest")}}