Expires
Baseline Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
Expires
响应标头包含响应应被视为过期的日期/时间。
无效的日期(比如 0)代表过去的日期,即该资源已经过期。
备注:
如果响应中有指令为 max-age
或 s-maxage
的 Cache-Control
标头,则 Expires
标头会被忽略。
标头类型 | 响应标头 |
---|---|
禁止修改的标头 | 否 |
列入 CORS 安全名单的响应标头 | 是 |
语法
http
Expires: <http-date>
指令
- <http-date>
-
HTTP 日期时间戳。
示例
http
Expires: Wed, 21 Oct 2015 07:28:00 GMT
规范
Specification |
---|
HTTP Caching # field.expires |
浏览器兼容性
Report problems with this compatibility data on GitHubdesktop | mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Expires |
Legend
Tip: you can click/tap on a cell for more information.
- Full support
- Full support
The compatibility table on 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.