如何删除javascript中以引号开头和结尾的重复字符串

function removeDuplicateString(str) {
  // 使用正则表达式匹配以引号开头和结尾的重复字符串
  const regex = /(['"])(.*?)\1/g;
  const matches = str.match(regex);

  // 如果有匹配到的字符串，则进行删除操作
  if (matches) {
    // 遍历匹配到的字符串数组
    matches.forEach(match => {
      // 获取引号内的字符串
      const duplicateString = match.slice(1, -1);
      // 使用字符串方法替换重复字符串为空字符串
      str = str.replace(new RegExp(`['"]${duplicateString}['"]`, 'g'), '');
    });
  }

  return str;
}

const input = 'var str = "Hello"; var duplicate = "Hello"; var another = "World";';
const output = removeDuplicateString(input);
console.log(output);