JavaScript $ is undefined when loading jQuery through javascript

You are loading jQuery into the main page, but not into your extension's content script.

Your getText() function is running in your content script, not in the page's script, so it's in an "isolated world": https://developer.chrome.com/extensions/content_scripts#execution-environment

Therefore it doesn't have access to the window object of your page, so $ (which is window.$) is not accessible. See also Can the window object be modified from a Chrome extension?

So you'll need to also load jQuery in your extension. See How to use jQuery in chrome extension? and How to use jQuery in Chrome extensions contentscript without conflict and Load JQuery into a Chrome extension?

Answer:1

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