• Skip to main content
  • Skip to search
  • Skip to select language
MDN Web Docs
  • References
    • Overview / Web Technology

      Web technology reference for developers

    • HTML

      Structure of content on the web

    • CSS

      Code used to describe document style

    • JavaScript

      General-purpose scripting language

    • HTTP

      Protocol for transmitting web resources

    • Web APIs

      Interfaces for building web applications

    • Web Extensions

      Developing extensions for web browsers

    • Accessibility

      Build web projects usable for all

    • Web Technology

      Web technology reference for developers

  • Learn
    • Overview / MDN Learning Area

      Learn web development

    • MDN Learning Area

      Learn web development

    • HTML

      Learn to structure web content with HTML

    • CSS

      Learn to style content using CSS

    • JavaScript

      Learn to run scripts in the browser

    • Accessibility

      Learn to make the web accessible to all

  • Plus
    • Overview

      A customized MDN experience

    • AI Help

      Get real-time assistance and support

    • Updates

      All browser compatibility updates at a glance

    • Documentation

      Learn how to use MDN Plus

    • FAQ

      Frequently asked questions about MDN Plus

  • Curriculum New
  • Blog
    • Playground

      Write, test and share your code

    • HTTP Observatory

      Scan a website for free

    • AI Help

      Get real-time assistance and support

  • Log in
  • Sign up for free
  1. 面向开发者的 Web 技术
  2. Web API
  3. Client
  4. Client.id
    • English (US)
    • Deutsch
    • Français
    • 日本語

此页面由社区从英文翻译而来。了解更多并加入 MDN Web Docs 社区。

在本文中

  • 值
  • 规范
  • 浏览器兼容性
  1. Service Worker API
  2. Client
  3. 实例属性
    1. frameType
    2. id
    3. type
    4. url
  4. 实例方法
    1. postMessage()
  5. Service Workers API 的相关页面
    1. Cache
    2. CacheStorage
    3. Clients
    4. ExtendableEvent
    5. ExtendableMessageEvent
    6. FetchEvent
    7. InstallEvent
    8. NavigationPreloadManager
    9. Navigator.serviceWorker
    10. ServiceWorker
    11. ServiceWorkerContainer
    12. ServiceWorkerGlobalScope
    13. ServiceWorkerRegistration
    14. Window.caches
    15. WindowClient
    16. WorkerGlobalScope.caches
    17. WorkerNavigator.serviceWorker
  6. 指南
    1. 使用 Service Worker

在本文中

  • 值
  • 规范
  • 浏览器兼容性

Client.id

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since April 2018.

  • Learn more
  • See full compatibility
  • Report feedback

Client 接口的 id 只读属性,返回 Client 对象的通用唯一标识。

值

唯一标识对象的字符串。

规范

Specification
Service Workers
# client-id

浏览器兼容性

Help improve MDN

Learn how to contribute.

This page was last modified on 2023年2月2日 by MDN contributors.

View this page on GitHub • Report a problem with this content
MDN logo

Your blueprint for a better internet.

  • MDN on Bluesky
  • MDN on Mastodon
  • MDN on X (formerly Twitter)
  • MDN on GitHub
  • MDN Blog RSS Feed

MDN

  • About
  • Blog
  • Careers
  • Advertise with us

Support

  • Product help
  • Report an issue

Our communities

  • MDN Community
  • MDN Forum
  • MDN Chat

Developers

  • Web Technologies
  • Learn Web Development
  • MDN Plus
  • Hacks Blog
  • Website Privacy Notice
  • Cookies
  • Legal
  • Community Participation Guidelines

Visit Mozilla Corporation’s not-for-profit parent, the Mozilla Foundation.
Portions of this content are ©1998–2025 by individual mozilla.org contributors. Content available under a Creative Commons license.