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Chrome Extension Content Script - Inject Javascript Before Page Code

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I am trying to make a Chrome extension with a content script to inject a script into a webpage before all other scripts in the page. (I am using the xhook library to intercept XHR

Solution 1:

If the extension is loaded at document_start, document.head = null. Hence, to overcome this, do - document.lastChild.appendChild(script_tag);. This creates a script tag in your <html> hierarchy. Hope this helps.

Also, Could you please tell why are you doing the following statement document.body = document.createElement("body"); I believe this is not required.


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