WindowOrWorkerGlobalScope.indexedDB - Web API 接口参考 编辑

indexedDB 是 WindowOrWorkerGlobalScope的一个只读属性，它集成了为应用程序提供异步访问索引数据库的功能的机制。.

语法

var IDBFactory = self.indexedDB;

值

一个 IDBFactory 对象.

示例

var db;
function openDB() {
 var DBOpenRequest = window.indexedDB.open('toDoList');
 DBOpenRequest.onsuccess = function(e) {
   db = DBOpenRequest.result;
 }
}

规范

Specification	Status	Comment
Indexed Database API Draft indexedDB	Recommendation	Defined in a WindowOrWorkerGlobalScope partial in the newest spec.
Indexed Database API 2.0 indexedDB	Recommendation	Initial definition.

浏览器兼容性

We're converting our compatibility data into a machine-readable JSON format. This compatibility table still uses the old format, because we haven't yet converted the data it contains. Find out how you can help!

• Desktop
• Mobile

Feature	Chrome	Edge	Firefox (Gecko)	Internet Explorer	Opera	Safari (WebKit)
Basic support	23webkit 24	(Yes)	10 moz 16.0 (16.0) 52.0 (52.0)[1]	10, partial	15	7.1
Available in workers	(Yes)	(Yes)	37.0 (37.0)	?	(Yes)	?
Indexed Database 2.0	58	?	?	?	45	?

Feature	Android Webview	Chrome for Android	Edge	Firefox Mobile (Gecko)	Firefox OS	IE Phone	Opera Mobile	Safari Mobile
Basic support	(Yes)	?	(Yes)	22.0 (22.0) 52.0 (52.0)[1]	1.0.1	10	22	8
Available in workers	(Yes)	?	(Yes)	37.0 (37.0)	(Yes)	?	(Yes)	?
Indexed Database 2.0	58	58	?	?	?	?	45	?

[1] indexedDB 定义在 WindowOrWorkerGlobalScope mixin（一种实现多继承的方法）上.

相关链接

• Using IndexedDB
• Starting transactions: IDBDatabase
• Using transactions: IDBTransaction
• Setting a range of keys: IDBKeyRange
• Retrieving and making changes to your data: IDBObjectStore
• Using cursors: IDBCursor
• Reference example: To-do Notifications (view example live.)