storage中只保留自己需要的key

function clearLocalStorageExcept(keysToKeep) {
  for (let i = 0; i < localStorage.length; i++) {
    const key = localStorage.key(i);
    if (!keysToKeep.includes(key)) {
      localStorage.removeItem(key);
    }
  }
}

const keysToKeep = ['key1', 'key2', 'key3']; // 指定要保留的键

clearLocalStorageExcept(keysToKeep);