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extensionTypes.RunAt - Mozilla | MDN
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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 toloading. The DOM is still loading."document_end": corresponds tointeractive. The DOM has finished loading, but resources such as scripts and images may still be loading."document_idle": corresponds tocomplete. The document and all its resources have finished loading.
The default value is "document_idle".
Browser compatibility
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Note:
This API is based on Chromium's chrome.extensionTypes API. This documentation is derived from extension_types.json in the Chromium code.