// ==UserScript==
// @name         keywordFilter
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  通过关键字过滤页面内容
// @author       wasdjkl
// @match        *://*/*
// @icon         data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==
// @grant        none
// @license      MIT
// @downloadURL none
// ==/UserScript==

(function () {
  'use strict';

  const blockWords = ["测试", "当然"]

  function hasKeyword(node) {
    if (node.textContent === null) return true;
    return blockWords.find(keyword => node.textContent.includes(keyword))
  }

  function replaceContent(node) {
    if (!hasKeyword(node)) return;
    if (node.nodeName === "#text") node.remove()
    node.childNodes.forEach(replaceContent);
  }

  replaceContent(document);

  var observer = new MutationObserver(() => {
    replaceContent(document);
  });

  observer.observe(document, {
    childList: true, attributes: false, subtree: true,
  });
})();