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Accept-Ranges响应的 HTTP 标头是由服务器使用以通告其支持部分请求的标志物。此字段的值表示可用于定义范围的单位。
如果存在Accept-Ranges标题，浏览器可能会尝试恢复中断的下载，而不是从头再次开始。
Header type | Response header |
|---|---|
Forbidden header name | no |
语法
Accept-Ranges: bytes Accept-Ranges: none
指令
none没有范围单位被支持，这使得它的标题相当于它自己的缺席，因此很少使用，尽管一些浏览器，如 IE9 ，它被用来禁用或删除下载管理器中的暂停按钮。
bytes范围的单位是字节。
例子
Accept-Ranges: bytes
规范
Specification | Title |
|---|---|
RFC 7233, section 2.3: Accept-Ranges | Hypertext Transfer Protocol (HTTP/1.1): Range Requests |
浏览器兼容性
Feature | Chrome | Firefox | Edge | Internet Explorer | Opera | Safari |
|---|---|---|---|---|---|---|
Basic Support | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) |
Feature | Android | Chrome for Android | Edge mobile | Firefox for Android | IE mobile | Opera Android | iOS Safari |
|---|---|---|---|---|---|---|---|
Basic Support | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) |