value 只读特性在 IDBCursorWithValue interface returns the value of the current cursor, whatever that is.

注意: 此特征可用于 Web 工作者 .

句法

var value = myIDBCursorWithValue.value;
					

The value of the current cursor.

范例

In this example we create a transaction, retrieve an object store, then use a cursor to iterate through all the records in the object store. Within each iteration we log the value of the cursor with cursor.value .

T he cursor does not require us to select the data based on a key; we can just grab all of it. Also note that in each iteration of the loop, you can grab data from the current record under the cursor object using cursor.value.foo . For a complete working example, see our IDBCursor example ( 实时查看范例 )。

function displayData() {
  var transaction = db.transaction(['rushAlbumList'], "readonly");
  var objectStore = transaction.objectStore('rushAlbumList');
  objectStore.openCursor().onsuccess = function(event) {
    var cursor = event.target.result;
    if(cursor) {
      var listItem = document.createElement('li');
      listItem.innerHTML = cursor.value.albumTitle + ', ' + cursor.value.year;
      list.appendChild(listItem);
      console.log(cursor.value);
      cursor.continue();
    } else {
      console.log('Entries all displayed.');
    }
  };
};
					

规范

规范 状态 注释
索引数据库 API 2.0
The definition of 'source' in that specification.
推荐
索引数据库 API 草案
在该规范中的 IDBDatabase 定义。
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
value 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 Chrome Android Yes Firefox Android 22 Opera Android 14 Safari iOS 8 Samsung Internet Android Yes

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

元数据

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