Hacker News AI Comment Replacer

Replaces Hacker News comment text with "AI" if it contains the word "AI"

You will need to install an extension such as Tampermonkey, Greasemonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Userscripts to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install a user script manager extension to install this script.

(I already have a user script manager, let me install it!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(I already have a user style manager, let me install it!)

// ==UserScript==
// @name        Hacker News AI Comment Replacer
// @description Replaces Hacker News comment text with "AI" if it contains the word "AI"
// @match       https://news.ycombinator.com/*
// @version 0.0.1.20251003165548
// @namespace https://greasyfork.org/users/1435046
// ==/UserScript==

(function() {
  // Function to scan and replace comments
  function replaceComments() {
    // Select all comment text blocks
    document.querySelectorAll(".commtext").forEach(function(commentBlock) {
      // Extract text content (ignores HTML formatting)
      var commentText = commentBlock.textContent;
      // If "AI" appears anywhere in the comment text
      if (commentText.includes("AI")) {
        // Replace entire inner HTML with the single word "AI"
        commentBlock.innerHTML = "AI";
      }
    });
  }

  // Run once at load
  replaceComments();

  // Run again whenever new comments are dynamically added
  var observer = new MutationObserver(replaceComments);
  observer.observe(document.body, { childList: true, subtree: true });
})();