IDBLocaleAwareKeyRange

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这是实验性技术
检查浏览器兼容性表格要小心谨慎在生产中使用这之前。

IDBLocaleAwareKeyRange 接口在 IndexedDB API is a Firefox-specific version of IDBKeyRange — it functions in exactly the same fashion, and has the same properties and methods, but it is intended for use with IDBIndex objects when the original index had a locale value specified upon its creation (see createIndex() 's optionalParameters ) — that is, it has locale aware sorting 被启用。

方法

This interface inherits all the methods of its parent interface, IDBKeyRange .

特性

This interface inherits all the properties of its parent interface, IDBKeyRange .

Bear in mind however that IDBLocaleAwareKeyRange has its own implementation of IDBKeyRange.bound . This is because when you use bound() , it checks if lower bound < upper bound, and throws an exception if that’s not the case. With locale-aware indexes, the meaning of < depends on the locale, so for example in Lithuanian Y is sorted between I and K. The only difference between IDBKeyRange and IDBLocaleAwareKeyRange is that the latter doesn’t do the aforementioned check.

Developers should always use IDBLocaleAwareKeyRange when dealing with locale-aware indexes.

范例

function displayData() {
  var keyRangeValue = IDBLocaleAwareKeyRange.bound("A", "F");
  var transaction = db.transaction(['fThings'], 'readonly');
  var objectStore = transaction.objectStore('fThings');
  var myIndex = objectStore.index('lName');
  myIndex.openCursor(keyRangeValue).onsuccess = function(event) {
    var cursor = event.target.result;
    if(cursor) {
      var tableRow = document.createElement('tr');
      tableRow.innerHTML =   '<td>' + cursor.value.id + '</td>'
                           + '<td>' + cursor.value.lName + '</td>'
                           + '<td>' + cursor.value.fName + '</td>'
                           + '<td>' + cursor.value.jTitle + '</td>'
                           + '<td>' + cursor.value.company + '</td>'
                           + '<td>' + cursor.value.eMail + '</td>'
                           + '<td>' + cursor.value.phone + '</td>'
                           + '<td>' + cursor.value.age + '</td>';
      tableEntry.appendChild(tableRow);
      cursor.continue();
    } else {
      console.log('Entries all displayed.');
    }
  };
};

规范

Not currently part of any specification.

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
`IDBLocaleAwareKeyRange` 非标	Chrome 不支持 No	Edge 不支持 No	Firefox 43 Disabled 43 Disabled Disabled From version 43: this feature is behind the `dom.indexedDB.experimental` preference. To change preferences in Firefox, visit about:config.	IE 不支持 No	Opera 不支持 No	Safari 不支持 No	WebView Android 不支持 No	Chrome Android 不支持 No	Firefox Android 43 Disabled 43 Disabled Disabled From version 43: this feature is behind the `dom.indexedDB.experimental` preference. To change preferences in Firefox, visit about:config.	Opera Android 不支持 No	Safari iOS 不支持 No	Samsung Internet Android 不支持 No

图例

完整支持
不支持
实验。期望将来行为有所改变。

用户必须明确启用此特征。

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

在此页

方法

特性

范例

规范

浏览器兼容性

图例

另请参阅

相关话题