René's URL Explorer Experiment

Title: 使用延迟 Fetch - Web API | MDN

Open Graph Title: 使用延迟 Fetch - Web API | MDN

Description: fetchLater() API 提供了一个用于请求延迟获取（fetch）的接口，该请求可在指定时间后发送，或者在页面关闭或导航离开时发送。

Open Graph Description: fetchLater() API 提供了一个用于请求延迟获取（fetch）的接口，该请求可在指定时间后发送，或者在页面关闭或导航离开时发送。

Opengraph URL: https://developer.mozilla.org/zh-CN/docs/Web/API/Fetch_API/Using_Deferred_Fetch

direct link

Domain: developer.mozilla.org

Links:

跳转到主要内容	https://developer.mozilla.org/zh-CN/docs/Web/API/Fetch_API/Using_Deferred_Fetch#content
跳转到搜索	https://developer.mozilla.org/zh-CN/docs/Web/API/Fetch_API/Using_Deferred_Fetch#search
MDN	https://developer.mozilla.org/zh-CN/
HTML: Markup language	https://developer.mozilla.org/zh-CN/docs/Web/HTML
Elements	https://developer.mozilla.org/zh-CN/docs/Web/HTML/Reference/Elements
Global attributes	https://developer.mozilla.org/zh-CN/docs/Web/HTML/Reference/Global_attributes
Attributes	https://developer.mozilla.org/zh-CN/docs/Web/HTML/Reference/Attributes
See all…	https://developer.mozilla.org/zh-CN/docs/Web/HTML/Reference
Responsive images	https://developer.mozilla.org/zh-CN/docs/Web/HTML/Guides/Responsive_images
HTML cheatsheet	https://developer.mozilla.org/zh-CN/docs/Web/HTML/Guides/Cheatsheet
Date & time formats	https://developer.mozilla.org/zh-CN/docs/Web/HTML/Guides/Date_and_time_formats
See all…	https://developer.mozilla.org/zh-CN/docs/Web/HTML/Guides
SVG	https://developer.mozilla.org/zh-CN/docs/Web/SVG
MathML	https://developer.mozilla.org/zh-CN/docs/Web/MathML
XML	https://developer.mozilla.org/zh-CN/docs/Web/XML
CSS: Styling language	https://developer.mozilla.org/zh-CN/docs/Web/CSS
Properties	https://developer.mozilla.org/zh-CN/docs/Web/CSS/Reference/Properties
Selectors	https://developer.mozilla.org/zh-CN/docs/Web/CSS/Reference/Selectors
At-rules	https://developer.mozilla.org/en-US/docs/Web/CSS/Reference/At-rules
Values	https://developer.mozilla.org/zh-CN/docs/Web/CSS/Reference/Values
See all…	https://developer.mozilla.org/zh-CN/docs/Web/CSS/Reference
Box model	https://developer.mozilla.org/zh-CN/docs/Web/CSS/Guides/Box_model/Introduction
Animations	https://developer.mozilla.org/zh-CN/docs/Web/CSS/Guides/Animations/Using
Flexbox	https://developer.mozilla.org/zh-CN/docs/Web/CSS/Guides/Flexible_box_layout/Basic_concepts
Colors	https://developer.mozilla.org/zh-CN/docs/Web/CSS/Guides/Colors/Applying_color
See all…	https://developer.mozilla.org/zh-CN/docs/Web/CSS/Guides
Column layouts	https://developer.mozilla.org/zh-CN/docs/Web/CSS/How_to/Layout_cookbook/Column_layouts
Centering an element	https://developer.mozilla.org/zh-CN/docs/Web/CSS/How_to/Layout_cookbook/Center_an_element
Card component	https://developer.mozilla.org/zh-CN/docs/Web/CSS/How_to/Layout_cookbook/Card
See all…	https://developer.mozilla.org/zh-CN/docs/Web/CSS/How_to/Layout_cookbook
JavaScript: Scripting language	https://developer.mozilla.org/zh-CN/docs/Web/JavaScript
Standard built-in objects	https://developer.mozilla.org/zh-CN/docs/Web/JavaScript/Reference/Global_Objects
Expressions & operators	https://developer.mozilla.org/zh-CN/docs/Web/JavaScript/Reference/Operators
Statements & declarations	https://developer.mozilla.org/zh-CN/docs/Web/JavaScript/Reference/Statements
Functions	https://developer.mozilla.org/zh-CN/docs/Web/JavaScript/Reference/Functions
See all…	https://developer.mozilla.org/zh-CN/docs/Web/JavaScript/Reference
Control flow & error handing	https://developer.mozilla.org/zh-CN/docs/Web/JavaScript/Guide/Control_flow_and_error_handling
Loops and iteration	https://developer.mozilla.org/zh-CN/docs/Web/JavaScript/Guide/Loops_and_iteration
Working with objects	https://developer.mozilla.org/zh-CN/docs/Web/JavaScript/Guide/Working_with_objects
Using classes	https://developer.mozilla.org/zh-CN/docs/Web/JavaScript/Guide/Using_classes
See all…	https://developer.mozilla.org/zh-CN/docs/Web/JavaScript/Guide
Web APIs: Programming interfaces	https://developer.mozilla.org/zh-CN/docs/Web/API
File system API	https://developer.mozilla.org/zh-CN/docs/Web/API/File_System_API
Fetch API	https://developer.mozilla.org/zh-CN/docs/Web/API/Fetch_API
Geolocation API	https://developer.mozilla.org/zh-CN/docs/Web/API/Geolocation_API
HTML DOM API	https://developer.mozilla.org/zh-CN/docs/Web/API/HTML_DOM_API
Push API	https://developer.mozilla.org/zh-CN/docs/Web/API/Push_API
Service worker API	https://developer.mozilla.org/zh-CN/docs/Web/API/Service_Worker_API
See all…	https://developer.mozilla.org/zh-CN/docs/Web/API
Using the Web animation API	https://developer.mozilla.org/zh-CN/docs/Web/API/Web_Animations_API/Using_the_Web_Animations_API
Using the Fetch API	https://developer.mozilla.org/zh-CN/docs/Web/API/Fetch_API/Using_Fetch
Working with the History API	https://developer.mozilla.org/zh-CN/docs/Web/API/History_API/Working_with_the_History_API
Using the Web speech API	https://developer.mozilla.org/zh-CN/docs/Web/API/Web_Speech_API/Using_the_Web_Speech_API
Using web workers	https://developer.mozilla.org/zh-CN/docs/Web/API/Web_Workers_API/Using_web_workers
All web technology	https://developer.mozilla.org/zh-CN/docs/Web
Accessibility	https://developer.mozilla.org/zh-CN/docs/Web/Accessibility
HTTP	https://developer.mozilla.org/zh-CN/docs/Web/HTTP
URI	https://developer.mozilla.org/zh-CN/docs/Web/URI
Web extensions	https://developer.mozilla.org/zh-CN/docs/Mozilla/Add-ons/WebExtensions
WebAssembly	https://developer.mozilla.org/zh-CN/docs/WebAssembly
WebDriver	https://developer.mozilla.org/zh-CN/docs/Web/WebDriver
See all…	https://developer.mozilla.org/zh-CN/docs/Web
Media	https://developer.mozilla.org/zh-CN/docs/Web/Media
Performance	https://developer.mozilla.org/zh-CN/docs/Web/Performance
Privacy	https://developer.mozilla.org/zh-CN/docs/Web/Privacy
Security	https://developer.mozilla.org/zh-CN/docs/Web/Security
Progressive web apps	https://developer.mozilla.org/zh-CN/docs/Web/Progressive_web_apps
Learn web development	https://developer.mozilla.org/zh-CN/docs/Learn_web_development
Getting started modules	https://developer.mozilla.org/zh-CN/docs/Learn_web_development/Getting_started
Core modules	https://developer.mozilla.org/zh-CN/docs/Learn_web_development/Core
MDN Curriculum	https://developer.mozilla.org/en-US/curriculum/
Check out the video course from Scrimba, our partner	https://scrimba.com/frontend-path-c0j?via=mdn-learn-navbar
Structuring content with HTML module	https://developer.mozilla.org/zh-CN/docs/Learn_web_development/Core/Structuring_content
CSS styling basics module	https://developer.mozilla.org/zh-CN/docs/Learn_web_development/Core/Styling_basics
CSS layout module	https://developer.mozilla.org/zh-CN/docs/Learn_web_development/Core/CSS_layout
Dynamic scripting with JavaScript module	https://developer.mozilla.org/zh-CN/docs/Learn_web_development/Core/Scripting
Playground	https://developer.mozilla.org/en-US/play
HTTP Observatory	https://developer.mozilla.org/en-US/observatory
Border-image generator	https://developer.mozilla.org/zh-CN/docs/Web/CSS/Guides/Backgrounds_and_borders/Border-image_generator
Border-radius generator	https://developer.mozilla.org/zh-CN/docs/Web/CSS/Guides/Backgrounds_and_borders/Border-radius_generator
Box-shadow generator	https://developer.mozilla.org/zh-CN/docs/Web/CSS/Guides/Backgrounds_and_borders/Box-shadow_generator
Color format converter	https://developer.mozilla.org/zh-CN/docs/Web/CSS/Guides/Colors/Color_format_converter
Color mixer	https://developer.mozilla.org/zh-CN/docs/Web/CSS/Guides/Colors/Color_mixer
Shape generator	https://developer.mozilla.org/zh-CN/docs/Web/CSS/Guides/Shapes/Shape_generator
About MDN	https://developer.mozilla.org/en-US/about
Advertise with us	https://developer.mozilla.org/en-US/advertising
Community	https://developer.mozilla.org/en-US/community
MDN on GitHub	https://github.com/mdn
Blog	https://developer.mozilla.org/en-US/blog/
面向开发者的 Web 技术	https://developer.mozilla.org/zh-CN/docs/Web
Web API	https://developer.mozilla.org/zh-CN/docs/Web/API
Fetch API	https://developer.mozilla.org/zh-CN/docs/Web/API/Fetch_API
使用延迟 Fetch	https://developer.mozilla.org/zh-CN/docs/Web/API/Fetch_API/Using_Deferred_Fetch
	https://github.com/orgs/mdn/discussions/739
	https://developer.mozilla.org/de/docs/Web/API/Fetch_API/Using_Deferred_Fetch
	https://developer.mozilla.org/en-US/docs/Web/API/Fetch_API/Using_Deferred_Fetch
	https://developer.mozilla.org/ja/docs/Web/API/Fetch_API/Using_Deferred_Fetch
	https://developer.mozilla.org/zh-CN/docs/Web/API/Fetch_API/Using_Deferred_Fetch
了解更多并加入 MDN Web Docs 社区。	https://developer.mozilla.org/zh-CN/docs/MDN/Community/Contributing/Translated_content#活跃语言
	https://developer.mozilla.org/en-US/docs/Web/API/Fetch_API/Using_Deferred_Fetch
概述	https://developer.mozilla.org/zh-CN/docs/Web/API/Fetch_API/Using_Deferred_Fetch#概述
配额	https://developer.mozilla.org/zh-CN/docs/Web/API/Fetch_API/Using_Deferred_Fetch#配额
配额示例	https://developer.mozilla.org/zh-CN/docs/Web/API/Fetch_API/Using_Deferred_Fetch#配额示例
概述	https://developer.mozilla.org/zh-CN/docs/Web/API/Fetch_API/Using_Deferred_Fetch#概述
	https://developer.mozilla.org/zh-CN/docs/Web/HTML/Reference/Elements/img
XMLHttpRequest	https://developer.mozilla.org/zh-CN/docs/Web/API/XMLHttpRequest
信标 API	https://developer.mozilla.org/zh-CN/docs/Web/API/Beacon_API
Fetch API	https://developer.mozilla.org/zh-CN/docs/Web/API/Fetch_API
keepalive	https://developer.mozilla.org/en-US/docs/Web/API/Request/keepalive
unload	https://developer.mozilla.org/zh-CN/docs/Web/API/Window/unload_event
beforeunload	https://developer.mozilla.org/zh-CN/docs/Web/API/Window/beforeunload_event
pagehide	https://developer.mozilla.org/zh-CN/docs/Web/API/Window/pagehide_event
visibilitychange	https://developer.mozilla.org/zh-CN/docs/Web/API/Document/visibilitychange_event
Fetch API	https://developer.mozilla.org/zh-CN/docs/Web/API/Fetch_API
AbortController	https://developer.mozilla.org/zh-CN/docs/Web/API/AbortController
配额	https://developer.mozilla.org/zh-CN/docs/Web/API/Fetch_API/Using_Deferred_Fetch#配额
deferred-fetch	https://developer.mozilla.org/zh-CN/docs/Web/HTTP/Reference/Headers/Permissions-Policy/deferred-fetch
deferred-fetch-minimal	https://developer.mozilla.org/zh-CN/docs/Web/HTTP/Reference/Headers/Permissions-Policy/deferred-fetch-minimal
权限策略	https://developer.mozilla.org/zh-CN/docs/Web/HTTP/Guides/Permissions_Policy
按报告源和子框架的配额限制	https://developer.mozilla.org/zh-CN/docs/Web/API/Fetch_API/Using_Deferred_Fetch#按报告源和子框架的配额限制
通过共享顶级配额增加子框架配额	https://developer.mozilla.org/zh-CN/docs/Web/API/Fetch_API/Using_Deferred_Fetch#通过共享顶级配额增加子框架配额
deferred-fetch	https://developer.mozilla.org/zh-CN/docs/Web/HTTP/Reference/Headers/Permissions-Policy/deferred-fetch
限制共享配额	https://developer.mozilla.org/zh-CN/docs/Web/API/Fetch_API/Using_Deferred_Fetch#限制共享配额
deferred-fetch-minimal	https://developer.mozilla.org/zh-CN/docs/Web/HTTP/Reference/Headers/Permissions-Policy/deferred-fetch-minimal
deferred-fetch-minimal	https://developer.mozilla.org/zh-CN/docs/Web/HTTP/Reference/Headers/Permissions-Policy/deferred-fetch-minimal
将配额委托给子框架的子框架	https://developer.mozilla.org/zh-CN/docs/Web/API/Fetch_API/Using_Deferred_Fetch#将配额委托给子框架的子框架
Permissions-Policy	https://developer.mozilla.org/zh-CN/docs/Web/HTTP/Reference/Headers/Permissions-Policy
当配额超出时	https://developer.mozilla.org/zh-CN/docs/Web/API/Fetch_API/Using_Deferred_Fetch#当配额超出时
fetchLater()	https://developer.mozilla.org/en-US/docs/Web/API/Window/fetchLater
配额示例	https://developer.mozilla.org/zh-CN/docs/Web/API/Fetch_API/Using_Deferred_Fetch#配额示例
使用最小配额	https://developer.mozilla.org/zh-CN/docs/Web/API/Fetch_API/Using_Deferred_Fetch#使用最小配额
将最小配额限制为指定源	https://developer.mozilla.org/zh-CN/docs/Web/API/Fetch_API/Using_Deferred_Fetch#将最小配额限制为指定源
通过顶级例外完全撤销最小配额	https://developer.mozilla.org/zh-CN/docs/Web/API/Fetch_API/Using_Deferred_Fetch#通过顶级例外完全撤销最小配额
完全撤销最小配额且不作任何例外	https://developer.mozilla.org/zh-CN/docs/Web/API/Fetch_API/Using_Deferred_Fetch#完全撤销最小配额且不作任何例外
同源子框架与顶级共享配额并可以委托给子框架	https://developer.mozilla.org/zh-CN/docs/Web/API/Fetch_API/Using_Deferred_Fetch#同源子框架与顶级共享配额并可以委托给子框架
同源子框架被跨源子框架分隔时不能与顶级文档共享配额	https://developer.mozilla.org/zh-CN/docs/Web/API/Fetch_API/Using_Deferred_Fetch#同源子框架被跨源子框架分隔时不能与顶级文档共享配额
子框架的子框架默认不获得配额	https://developer.mozilla.org/zh-CN/docs/Web/API/Fetch_API/Using_Deferred_Fetch#子框架的子框架默认不获得配额
将完整配额授予更深层子框架	https://developer.mozilla.org/zh-CN/docs/Web/API/Fetch_API/Using_Deferred_Fetch#将完整配额授予更深层子框架
重定向不会转移配额	https://developer.mozilla.org/zh-CN/docs/Web/API/Fetch_API/Using_Deferred_Fetch#重定向不会转移配额
沙箱化的同源 iframe 实际上是独立的源	https://developer.mozilla.org/zh-CN/docs/Web/API/Fetch_API/Using_Deferred_Fetch#沙箱化的同源_iframe_实际上是独立的源
禁止 iframe 使用 fetchLater()	https://developer.mozilla.org/zh-CN/docs/Web/API/Fetch_API/Using_Deferred_Fetch#禁止_iframe_使用_fetchlater
allow	https://developer.mozilla.org/zh-CN/docs/Web/HTML/Reference/Elements/iframe#allow
抛出 QuotaExceededError 的示例	https://developer.mozilla.org/zh-CN/docs/Web/API/Fetch_API/Using_Deferred_Fetch#抛出_quotaexceedederror_的示例
最终抛出 QuotaExceededError 的示例	https://developer.mozilla.org/zh-CN/docs/Web/API/Fetch_API/Using_Deferred_Fetch#最终抛出_quotaexceedederror_的示例
子框架重定向回顶级源时，允许使用顶级配额	https://developer.mozilla.org/zh-CN/docs/Web/API/Fetch_API/Using_Deferred_Fetch#子框架重定向回顶级源时，允许使用顶级配额
了解如何参与贡献	https://developer.mozilla.org/zh-CN/docs/MDN/Community/Getting_started
MDN 贡献者	https://developer.mozilla.org/zh-CN/docs/Web/API/Fetch_API/Using_Deferred_Fetch/contributors.txt
在 GitHub 上查看此页面	https://github.com/mdn/translated-content/blob/main/files/zh-cn/web/api/fetch_api/using_deferred_fetch/index.md?plain=1
报告此内容的问题	https://github.com/mdn/translated-content/issues/new?template=page-report-zh-cn.yml&mdn-url=https%3A%2F%2Fdeveloper.mozilla.org%2Fzh-CN%2Fdocs%2FWeb%2FAPI%2FFetch_API%2FUsing_Deferred_Fetch&metadata=%3C%21--+Do+not+make+changes+below+this+line+--%3E%0A%3Cdetails%3E%0A%3Csummary%3EPage+report+details%3C%2Fsummary%3E%0A%0A*+Folder%3A+%60zh-cn%2Fweb%2Fapi%2Ffetch_api%2Fusing_deferred_fetch%60%0A*+MDN+URL%3A+https%3A%2F%2Fdeveloper.mozilla.org%2Fzh-CN%2Fdocs%2FWeb%2FAPI%2FFetch_API%2FUsing_Deferred_Fetch%0A*+GitHub+URL%3A+https%3A%2F%2Fgithub.com%2Fmdn%2Ftranslated-content%2Fblob%2Fmain%2Ffiles%2Fzh-cn%2Fweb%2Fapi%2Ffetch_api%2Fusing_deferred_fetch%2Findex.md%0A*+Last+commit%3A+https%3A%2F%2Fgithub.com%2Fmdn%2Ftranslated-content%2Fcommit%2Fb20e5dd733d05166ed6e8f33751e122d365c4d07%0A*+Document+last+modified%3A+2026-04-17T06%3A00%3A14.000Z%0A%0A%3C%2Fdetails%3E
Fetch API	https://developer.mozilla.org/zh-CN/docs/Web/API/Fetch_API
使用 Fetch	https://developer.mozilla.org/zh-CN/docs/Web/API/Fetch_API/Using_Fetch
使用延迟 Fetch	https://developer.mozilla.org/zh-CN/docs/Web/API/Fetch_API/Using_Deferred_Fetch
DeferredRequestInit	https://developer.mozilla.org/en-US/docs/Web/API/DeferredRequestInit
FetchLaterResult	https://developer.mozilla.org/en-US/docs/Web/API/FetchLaterResult
Headers	https://developer.mozilla.org/zh-CN/docs/Web/API/Headers
Request	https://developer.mozilla.org/zh-CN/docs/Web/API/Request
RequestInit	https://developer.mozilla.org/en-US/docs/Web/API/RequestInit
Response	https://developer.mozilla.org/zh-CN/docs/Web/API/Response
Window.fetch()	https://developer.mozilla.org/zh-CN/docs/Web/API/Window/fetch
WorkerGlobalScope.fetch()	https://developer.mozilla.org/zh-CN/docs/Web/API/WorkerGlobalScope/fetch
Window.fetchLater()	https://developer.mozilla.org/en-US/docs/Web/API/Window/fetchLater
MDN	https://developer.mozilla.org/
	https://github.com/mdn/
	https://bsky.app/profile/developer.mozilla.org
	https://x.com/mozdevnet
	https://mastodon.social/@mdn
	https://developer.mozilla.org/en-US/blog/rss.xml
关于	https://developer.mozilla.org/en-US/about
博客	https://developer.mozilla.org/en-US/blog/
Mozilla 招聘	https://www.mozilla.org/en-US/careers/listings/
与我们合作投放广告	https://developer.mozilla.org/en-US/advertising
MDN Plus	https://developer.mozilla.org/en-US/plus
产品帮助	https://support.mozilla.org/products/mdn-plus
MDN 社区	https://developer.mozilla.org/en-US/community
社区资源	https://developer.mozilla.org/en-US/docs/MDN/Community
写作指南	https://developer.mozilla.org/en-US/docs/MDN/Writing_guidelines
MDN Discord	https://developer.mozilla.org/discord
MDN GitHub 主页	https://github.com/mdn
Web 技术	https://developer.mozilla.org/en-US/docs/Web
学习 Web 开发	https://developer.mozilla.org/en-US/docs/Learn_web_development
指南	https://developer.mozilla.org/en-US/docs/MDN/Guides
教程	https://developer.mozilla.org/en-US/docs/MDN/Tutorials
术语表	https://developer.mozilla.org/en-US/docs/Glossary
Hacks 博客	https://hacks.mozilla.org/
Mozilla	https://www.mozilla.org/
网站隐私声明	https://www.mozilla.org/privacy/websites/
遥测设置	https://www.mozilla.org/en-US/privacy/websites/data-preferences/
法律声明	https://www.mozilla.org/about/legal/terms/mozilla
社区参与准则	https://www.mozilla.org/about/governance/policies/participation/
知识共享许可协议	https://developer.mozilla.org/docs/MDN/Writing_guidelines/Attrib_copyright_license

Viewport: width=device-width, initial-scale=1.0