* 仕様書

[REFS[
- [1] [CITE@en[Fetch Standard]] ([TIME[2017-06-15 14:00:01 +09:00]]) <https://fetch.spec.whatwg.org/#concept-request-initiator>
]REFS]

* 文脈


[6] [[混合内容][Mixed Content]]の処理で検査されます。

* 歴史

[2] [[文脈][要求文脈]]が分割されて導入されました。

[3] [CITE@en[Add prefetch and prerender initiators]]
([[yoavweiss]]著, [TIME[2018-04-27 17:36:34 +09:00]])
<https://github.com/whatwg/fetch/commit/d5d084096392f2c47841308952a76751bafdd375>

[4] [CITE@en[Add a `prefetch` initiator by yoavweiss · Pull Request #659 · whatwg/fetch]]
([TIME[2018-05-02 13:02:53 +09:00]])
<https://github.com/whatwg/fetch/pull/659>

[5] [CITE@en[Request.destination for `<link rel=prefetch>` · Issue #658 · whatwg/fetch]]
([TIME[2018-05-02 13:07:55 +09:00]])
<https://github.com/whatwg/fetch/issues/658>