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Experimental WebAPI

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Getting started
Design Philosophy
API Surface
Examples
Project Status
Contributing
API Documentation
- Overview
- Canvas
- ChannelMessaging
  - Overview
  - MessagePort
- Clipboard
- CredentialManagement
  - Overview
  - CredentialsContainer
- CSSFontLoading
- DOM
- EncryptedMediaExtensions
- Event
- Fetch
- File
- FileAndDirectoryEntries
- Gamepad
  - Overview
  - GamepadHapticActuator
- Geolocation
- History
  - Overview
  - History
- IndexedDB
- IntersectionObserver
- MediaCapabilities
  - Overview
  - MediaCapabilities
- MediaCaptureAndStreams
- MediaSession
- MutationObserver
  - Overview
  - MutationObserver
- Notification
  - Overview
  - Notification
- Performance
- Permissions
  - Overview
  - Permissions
- PictureInPicture
  - Overview
  - PictureInPicture
- Push
- RemotePlayback
  - Overview
  - RemotePlayback
- ResizeObserver
  - Overview
  - ResizeObserver
- ScreenWakeLock
- ServiceWorker
- Storage
  - Overview
  - StorageManager
- UIEvents
- URL
- ViewTransitions
  - Overview
  - ViewTransition
- VisualViewport
  - Overview
  - VisualViewport
- WebAudio
- WebCrypto
- WebLocks
  - Overview
  - LockManager
- WebMIDI
  - Overview
  - WebMIDI
- WebSockets
- WebSpeech
- WebStorage
- WebVTT
- WebWorkers
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Overview
Values
- item

On this page

Overview
Values
- item

CSSRuleList

Values

item

Read more on MDN

let item: (DomTypes.cssRuleList, int) => DomTypes.cssRule

Parameters

DomTypes.cssRuleList int

Return type

DomTypes.cssRule

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