![]() ![]() Use to inject a content script on demand. ![]() After that happens, use messaging but note, it can't send DOM elements, Map, Set, ArrayBuffer, classes, functions, and so on - it can only send JSON-compatible simple objects and types so you'll need to manually extract the required data and pass it as a simple array or object. Content scripts will execute in the tab as a part of that page, not as a part of the extension. You need a content script to access DOM of web pages and interact with a tab's contents. ManifestV3 service worker doesn't have any DOM/document. Extension pages/scripts such as the browser_action popup or ManifestV2 background script have their own DOM, document, window, and a chrome-extension:// URL (use devtools for that part of the extension to inspect it). ![]()
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