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
The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Update compatibility data on GitHub
| Desktop | Mobile | ||||
|---|---|---|---|---|---|
RunAt | Chrome
Partial support
20
| Edge No support No | Firefox Full support 45 | Opera
Partial support
15
| Firefox Android Full support 48 |
Legend
- Full support
- Full support
- Partial support
- Partial support
- No support
- No support
- See implementation notes.
- 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.
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