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• 句法
• 范例
• 规范
• 浏览器兼容性
• 另请参阅
• 相关话题

onclose event handler of the IDBDatabase interface handles the close event, which is fired when the database is unexpectedly closed. This can happen, for example, when the application is shut down or access to the disk the database is stored on is lost while the database is open.

close event is fired after all transactions have been aborted and the connection has been closed.

注意： 此特征可用于 Web 工作者 .

句法

IDBDatabase.onclose = function(event) { ... };
					

值

A function which is called when the close event is fired.

范例

db.onclose = function(event) {
  myAppShowAlert('The database "' + db.name + '" has unexpectedly closed.');
};
					

规范

规范	状态	注释
索引数据库 API 草案 The definition of 'onclose' in that specification.	推荐

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
onclose	Chrome 31 注意事项 31 注意事项 approx	Edge ≤18	Firefox 50	IE ?	Opera Yes	Safari 10.1	WebView Android Yes	Chrome Android 31	Firefox Android 50	Opera Android Yes	Safari iOS 10.3	Samsung Internet Android 2.0

图例

完整支持

完整支持

兼容性未知 ?

兼容性未知

见实现注意事项。

另请参阅

• 使用 IndexedDB
• IDBDatabase
• close event

元数据

• 最后修改： Mar 18, 2019

相关话题

1. IndexedDB API
2. IDBDatabase
3. 特性

   1. 名称
   2. objectStoreNames
   3. onabort
   4. onclose
   5. onerror
   6. onversionchange
   7. version
4. 方法

   1. close()
   2. createObjectStore()
   3. deleteObjectStore()
   4. transaction()
5. 事件

   1. versionchange
6. 继承：

   1. EventTarget
7. IndexedDB 相关页面

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