Quiz · 5 questions

✋ Content Scripts

The hand inside the page — DOM access, isolated world, host bridges

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Quiz

01A content script and the host page's own JavaScript run inside the same tab. What do they share, and what stays separate?

02You need a content script to run on every github.com/* page automatically as the user browses. Which injection style fits?

03Your content script needs to call a function the host page defined as window.fancyHelper(). What's the correct path?

04ClipDeck's Track 3 milestone is the C in CRUD — saving the user's selected text as a clip. Where does the selection live and which API reads it?

05You add a content script that injects a button into every page. On Gmail and YouTube the button appears, but the button's click handler never fires. What's the most likely cause?

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