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去除邪恶数字

去除邪恶数字，防止口算出错

当前为 2023-08-20 提交的版本，查看 最新版本。

// ==UserScript==
// @name               去除邪恶数字
// @name:en            Remove A Certain Evil Number
// @name:zh            去除邪恶数字
// @namespace          https://github.com/KumaTea
// @namespace          http://greasyfork.icu/en/users/169784-kumatea
// @version            0.1.0.1
// @description        去除邪恶数字，防止口算出错
// @description:en     Removing a certain evil number to prevent calculation errors
// @description:zh     去除邪恶数字，防止口算出错
// @author             KumaTea DFK_KLEE
// @match              https://twitter.com/*
// @match              https://x.com/*
// @license            GPLv3
// ==/UserScript==

/* jshint esversion: 8 */
// "use strict";

const evilNum = "\u0038\u0039\u0036\u0034";
const reg = new RegExp(evilNum, "g");
const goodNum = "\u0038\u0039\u0037\u0032";
/* 备用
中文数字、全角数字、上标数字等
性能原因暂不启用
const evilNumList = [
    '\u0038\u0039\u0036\u0034',
]
*/

function replaceStrings(target) {
  const textNodes = target.querySelectorAll("span");
  let replaceCount = 0;
  // 使用for of遍历节点
  for (const textNode of textNodes) {
    const originalText = textNode.textContent;
    const isEvilNum = reg.test(originalText);
    if (isEvilNum) {
      textNode.textContent = originalText.replace(evilNum, goodNum);
      replaceCount += 1;
    }
  }

  // 控制台输出结果
  if (replaceCount) {
    console.log(
      "replaced " +
        replaceCount +
        " string(s) in a total of " +
        textNodes.length +
        "!"
    );
  }
}

function main() {
  // DOM更新后的回调
  const observer = new MutationObserver((mutationsList, observer) => {
    // 获取更新了的节点
    for (const mutation of mutationsList) {
      if (mutation.target) {
        replaceStrings(mutation.target);
      }
    }
  });

  // 监听DOM更新
  observer.observe(document, { childList: true, subtree: true });
}

main();