This object is used by:
The code can be in a separate file, specified using
file, or in a string, specified using
code. One (and only one) of
file must be set.
Be careful using the
codeparameter. Incorrect use of it may open your extension to cross-site scripting attacks.
Values of this type are objects. They contain the following properties:
true, the code will be injected into all frames of the current page. If
frameIdis set, then the code will be injected into the specified frame and all its child frames. If it is
false, code is only injected into the top frame. Defaults to
string. Code to inject, as a text string.
string. Path to a file containing the code to inject. In Firefox, relative URLs are resolved relative to the current page URL. In Chrome, these URLs are resolved relative to the add-on's base URL. To work cross-browser, you can specify the path as an absolute URL, starting at the add-on's root, like this:
integer. The frame where the code should be injected. Defaults to
0(the top-level frame).
true, the code will be injected into embedded "about:blank" and "about:srcdoc" frames if your add-on has access to their parent document. The code cannot be inserted in top-level about: frames. Defaults to
extensionTypes.RunAt. The soonest that the code will be injected into the tab. Defaults to "document_idle".
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.
|Chrome||Edge||Firefox||Firefox for Android||Opera|
- 'matchAboutBlank' is not supported.
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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