Issue with coding: utilizing content scripts in a Chrome Extension to manipulate webpage DOMs

My goal is to develop a Google Chrome extension that can manipulate the DOM of a specific webpage. While the extension itself functions properly, I am facing an issue where I am unable to remove certain code from the current webpage.

I have created a manifest.json file with the following content:

{
"manifest_version": 2,

"name": "Extension Name",
"description": "Description of Extension functionality ...",
"version": "2.3",

"icons": {
    "32": "images/icon_32.png",
    "128": "images/icon_128.png"
},
"permissions": [
    "<all_urls>",
    "file:///*/*"
],
"browser_action": {
    "default_icon": "images/icon_16.png",
    "default_popup": "popup/popup.html"
},
"content_scripts": [{
    "matches": ["http://test.com/*"],
    "js": ["js/test.js"],
    "all_frames": true
}]
}

The main challenge lies in removing only a specific part of the code {display: block;} within the DOM of the test website. This code snippet is located within the <style> element.

The complete code snippet is as follows:

(Code snippet provided)

In my test.js file, I've attempted various JavaScript methods to eliminate this section of code, but so far, none have worked successfully.

document.head.innerHTML = document.head.innerHTML.replace(new RegExp("display", "g"), " ");

(The <style> element is contained within the html - head - style structure)

If anyone could offer guidance on how to resolve this issue, it would be greatly appreciated.

Answer №1

To focus solely on the content within the <style> tags, it's important to first select those specific style tags and then proceed with modifying their content. Modifying the document.head.innerHTML directly can be risky as it might inadvertently remove other tags within the <head> section.

let styles = document.head.querySelectorAll('style');
styles.forEach((style) => {
  style.innerHTML = style.innerHTML.replace(/your regex/, 'new content');
});

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