Those individuals have replicated my website, neglecting to remove the JavaScript and CSS. New content emerges on their imitation with a lag of several hours.
Based on the analytics, I've observed that their illegitimate site is receiving traffic (even the analytics have been plagiarized).
Is there a JavaScript solution that could examine the domain and, if it does not match test.com, redirect the user to the same page on my legitimate test.com domain?

I can provide you with a more detailed and comprehensive solution to address the issue of your website being replicated without proper authorization.

1. JavaScript-based Redirection:
  - Detailed Explanation:
    - The JavaScript-based redirection solution checks the current domain of the user's browser and compares it to the authorized domain (in this case, "test.com").
    - If the current domain does not match the authorized domain, the script will redirect the user to the same page on your legitimate website (https://test.com) using the `window.location.replace()` method.
    - This ensures that users accessing the unauthorized replica are seamlessly redirected to your original website, preserving your brand, content, and user experience.
  - Example Code:
   
   
// Check the current domain
    var currentDomain = window.location.hostname;
   
    // Define the authorized domain
    var authorizedDomain = "test.com";
   
    // If the current domain does not match the authorized domain, redirect the user
    if (currentDomain !== authorizedDomain) {
      window.location.replace("https://test.com" + window.location.pathname);
    }   
  - Deployment:
    - You can integrate this code snippet into your website's header or footer, ensuring that it runs on every page load.
    - Alternatively, you can create a separate JavaScript file (e.g., `anti-plagiarism.js`) and include it in your website's HTML, so that the redirection script is executed across all pages.

2. Content Fingerprinting:
  - Detailed Explanation:
    - Content fingerprinting solutions, such as Plagiarism.org or Copyscape, can help you detect and track instances of your website's content being used without permission.
    - These services analyze the unique characteristics of your website's content, including text, images, and other media, and compare it to the web to identify potential plagiarism or unauthorized use.
    - By regularly monitoring your website's content through these services, you can promptly identify any replication attempts and take appropriate action.
  - Implementation:
    - Sign up for a content fingerprinting service that best suits your needs and budget.
    - Integrate the service's tracking code or API into your website's backend or content management system to automate the monitoring process.
    - Set up alerts or notifications to be informed of any potential plagiarism or unauthorized use of your content.

3. DMCA Takedown Notices:
  - Detailed Explanation:
    - The Digital Millennium Copyright Act (DMCA) provides a formal process for copyright holders to request the removal of infringing content from websites and search engines.
    - By filing a DMCA takedown notice, you can compel the hosting providers and search engines to remove the unauthorized replications of your website, effectively eliminating their online presence.
  - Process:
    - Gather evidence of the unauthorized replication, including screenshots, URLs, and any other relevant dоcumentation.
    - Prepare a formal DMCA takedown notice, following the guidelines and requirements set forth by the DMCA.
    - Submit the DMCA takedown notice to the hosting providers and search engines where the unauthorized content is appearing.
    - Follow up on the DMCA requests to ensure timely removal of the infringing content.

4. Legal Action:
  - Detailed Explanation:
    - If the unauthorized replication of your website is causing significant harm to your business, you may consider pursuing legal action against the responsible individuals or entities.
    - Consult with a qualified intellectual property attorney to understand your legal options and the potential remedies available, such as cease and desist orders, damages, and injunctions.
  - Consultation Process:
    - Schedule a consultation with an experienced intellectual property attorney.

If the current website's host domain does not match 'test.com', the code will automatically redirect the user to 'http://test.com' after a 20-second delay. This delay is implemented to avoid immediate suspicion of the redirection, which is likely intended to conceal the true purpose or nature of the website visit.

if (window.location.host !== 'test.com') {
  window.location.replace('http://test.com')
}

if (window.location.host !== 'test.com') {
  setTimeout(function() {
    window.location.replace('http://test.com')
  }, 20000)
}

While implementing a redirect, the website will still maintain its visibility in the search engine index, or will it be removed from the search results altogether?

You can inject a simple domain check snippet to combat content scrapers:

if (location.hostname !== 'test.com') { 
  location.href = location.href.replace(location.hostname, 'test.com'); 
}
This script forces a redirect to your legit domain, killing off leechers trying to freeload your content. It's a quick fix but not bulletproof—cloners can strip or disable JS. Still, it's a solid first line of defense.

Alternatively, a more hardcore approach involves server-side validation or token-based content delivery to fully neuter copycats. Relying on client-side JS alone is a bit naive; it's like putting a band-aid on a bullet wound.

For a cheeky jab at the plagiarists, you might embed a console warning:

if(location.hostname !== 'test.com') { 
  console.warn('Hey clone, stop stealing! Redirecting you back...'); 
  location.href = location.href.replace(location.hostname, 'test.com'); 
}

It's lowkey trolling but sends a message to anyone inspecting your code.