在此页

• 句法
• 规范
• 浏览器兼容性
• 另请参阅
• 相关话题

getAllKeys() 方法在 IDBObjectStore interface returns an IDBRequest object retrieves record keys for all objects in the object store matching the specified parameter or all objects in the store if no parameters are given.

If a value is successfully found, then a structured clone of it is created and set as the result of the request object.

This method produces the same result for:

• a record that doesn't exist in the database
• a record that has an undefined value

To tell these situations apart, you need to call the openCursor() method with the same key. That method provides a cursor if the record exists, and no cursor if it does not.

句法

var request = objectStore.getAllKeys();
var request = objectStore.getAllKeys(query);
var request = objectStore.getAllKeys(query, count);
					

参数

query 可选

A value that is or resolves to an IDBKeyRange .

count 可选

Specifies the number of values to return if more than one is found. If it is lower than 0 or greater than 2 32 -1 a TypeError exception will be thrown.

返回值

IDBRequest object on which subsequent events related to this operation are fired.

异常

此方法可能引发 DOMException of one of the following types:

异常	描述
TransactionInactiveError	This IDBObjectStore 's transaction is inactive.
DataError	The key or key range provided contains an invalid key or is null.
InvalidStateError	IDBObjectStore has been deleted or removed.

规范

规范	状态	注释
索引数据库 API 草案 The definition of 'getAllKeys()' in that specification.	推荐	初始定义

浏览器兼容性

The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. 更新 GitHub 上的兼容性数据

	桌面						移动
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
getAllKeys	Chrome 48	Edge ≤79	Firefox 44	IE ?	Opera 35	Safari 10.1	WebView Android 48	Chrome Android 48	Firefox Android 48	Opera Android 35	Safari iOS 10.3	Samsung Internet Android 5.0

图例

完整支持

完整支持

兼容性未知 ?

兼容性未知

另请参阅

• 使用 IndexedDB
• 开始事务： IDBDatabase
• 使用事务： IDBTransaction
• 设置一系列键： IDBKeyRange
• 检索并使您的数据改变： IDBObjectStore
• 使用光标： IDBCursor
• 参考范例： 待办通知 ( 实时查看范例 )。

元数据

• 最后修改： 2019 年 3 月 23 日

相关话题

1. IndexedDB API
2. IDBObjectStore
3. 特性

   1. autoIncrement
   2. indexNames
   3. keyPath
   4. 名称
   5. transaction
4. 方法

   1. add()
   2. clear()
   3. count()
   4. createIndex()
   5. delete()
   6. deleteIndex()
   7. get()
   8. getAll()
   9. getAllKeys()
   10. getKey()
   11. index()
   12. openCursor()
   13. openKeyCursor()
   14. put()
5. IndexedDB 相关页面

   1. IDBCursor
   2. IDBCursorSync
   3. IDBCursorWithValue
   4. IDBDatabase
   5. IDBDatabaseException
   6. IDBDatabaseSync
   7. IDBEnvironment
   8. IDBEnvironmentSync
   9. IDBFactory
   10. IDBFactorySync
   11. IDBIndex
   12. IDBIndexSync
   13. IDBKeyRange
   14. IDBObjectStoreSync
   15. IDBOpenDBRequest
   16. IDBRequest
   17. IDBTransaction
   18. IDBTransactionSync
   19. IDBVersionChangeEvent
   20. IDBVersionChangeRequest