extensionTypes.RunAt

The soonest that the JavaScript or CSS will be injected into the tab.

Type

Values of this type are strings. Possible values are: "document_start", "document_end", "document_idle".

  • "document_start": corresponds to loading. The DOM is still loading.
  • "document_end": corresponds to interactive. The DOM has finished loading, but resources such as scripts and images may still be loading.
  • "document_idle": corresponds to complete. The document and all its resources have finished loading.

The default value is "document_idle".

Browser compatibility

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webextensions-desktopwebextensions-mobile
ChromeEdgeFirefoxOperaSafariFirefox for Android
RunAt

Legend

Full support
Full support
Partial support
Partial support
No support
No support
See implementation notes.

Acknowledgements

This API is based on Chromium's chrome.extensionTypes API. This documentation is derived from extension_types.json in the Chromium code.

Microsoft Edge compatibility data is supplied by Microsoft Corporation and is included here under the Creative Commons Attribution 3.0 United States License.