在此页

• 句法
• 范例
• 规范
• 浏览器兼容性
• 另请参阅
• 相关话题

deleteDatabase() 方法在 IDBFactory interface requests the deletion of a database. The method returns an IDBOpenDBRequest object immediately, and performs the deletion operation asynchronously.

If the database is successfully deleted, then a success event is fired on the request object returned from this method, with its result 设为 undefined . If an error occurs while the database is being deleted, then an error event is fired on the request object that is returned from this method.

当 deleteDatabase() is called, any other open connections to this particular database will get a versionchange 事件。

注意： 此特征可用于 Web 工作者 .

句法

For the current standard:

var request = indexedDB.deleteDatabase(name);
					

For the experimental version with 选项 (see below):

var request = indexedDB.deleteDatabase(name, options);
					

参数

名称

The name of the database you want to delete. Note that attempting to delete a database that doesn't exist does not throw an exception, in contrast to IDBDatabase.deleteObjectStore() , which does throw an exception if the named object store does not exist.

选项 非标

In Gecko, since version 26 , you can include a non-standard optional storage parameter that specifies whether you want to delete a permanent (the default value) IndexedDB, or an indexedDB in temporary storage (aka shared pool.)

返回值

A IDBOpenDBRequest on which subsequent events related to this request are fired.

范例

var DBDeleteRequest = window.indexedDB.deleteDatabase("toDoList");
DBDeleteRequest.onerror = function(event) {
  console.log("Error deleting database.");
};
DBDeleteRequest.onsuccess = function(event) {
  console.log("Database deleted successfully");
  console.log(event.result); // should be undefined
};
					

规范

规范	状态	注释
索引数据库 API 草案 The definition of 'deleteDatabase()' in that specification.	推荐
索引数据库 API 2.0 The definition of 'deleteDatabase()' 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
deleteDatabase	Chrome 24 24 23 — 24 Prefixed Prefixed Implemented with the vendor prefix: webkit	Edge 12	Firefox 16 16 10 — 16 Prefixed Prefixed Implemented with the vendor prefix: moz	IE 部分支持 10	Opera 15	Safari 7	WebView Android Yes Yes ? — ? Prefixed Prefixed Implemented with the vendor prefix: webkit	Chrome Android 25	Firefox Android 22	Opera Android 14	Safari iOS 8	Samsung Internet Android 1.5

图例

完整支持

完整支持

部分支持

部分支持

要求使用供应商前缀或不同名称。

要求使用供应商前缀或不同名称。

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： 2020 年 1 月 22 日

相关话题

1. IndexedDB API
2. IDBFactory
3. 方法

   1. cmp()
   2. databases
   3. deleteDatabase()
   4. open()
4. IndexedDB 相关页面

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