In a Chrome Extension:
How can I check in which iframe of a multi iframe page a Content Script was injected?
e.g. After injecting Content script into Gmail, how to check in which iframe is really located?
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In a Chrome Extension:
How can I check in which iframe of a multi iframe page a Content Script was injected?
e.g. After injecting Content script into Gmail, how to check in which iframe is really located?
Depends on your manifest file, especially all_frames property of content_scripts.
If all_frames = false, it doesn’t inject into any iframe, because it injects only into the top iframe, i.e. the document. If all_frames = true, it injects into all iframes. See the documentation.