如何撤消/重做javascript正则表达式.replace脚本？

// 备份原始字符串
var backupString = originalString;

// 执行替换操作
originalString = originalString.replace(regex, replacement);

// 撤消替换操作
originalString = backupString;

// 重做替换操作
originalString = originalString.replace(regex, replacement);

// 定义替换次数变量
var replaceCount = 0;

// 封装替换操作的函数
function replaceWithUndoRedo(regex, replacement) {
  // 执行替换操作
  originalString = originalString.replace(regex, function(match) {
    replaceCount++;
    return replacement;
  });
}

// 撤消替换操作
function undoReplace() {
  for (var i = 0; i < replaceCount; i++) {
    originalString = originalString.replace(replacement, regex);
  }
  replaceCount = 0;
}

// 重做替换操作
function redoReplace() {
  replaceWithUndoRedo(regex, replacement);
}