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+---
+title: IDBIndex.locale
+slug: Web/API/IDBIndex/locale
+translation_of: Web/API/IDBIndex/locale
+---
+<div>{{APIRef("IndexedDB")}}{{SeeCompatTable}}</div>
+
+<p>The <strong><code>locale</code></strong> read-only property of the {{domxref("IDBIndex")}} interface returns the locale of the index (for example <code>en-US</code>, or <code>pl</code>) if it had a <code>locale</code> value specified upon its creation (see <a href="https://developer.mozilla.org/en-US/docs/Web/API/IDBObjectStore/createIndex#Parameters"><code>createIndex()</code>'s optionalParameters</a>.) Note that this property always returns the current locale being used in this index, in other words, it never returns <code>"auto"</code>.</p>
+
+<h2 id="Syntax">Syntax</h2>
+
+<pre class="brush: js">var myIndex = objectStore.index('index');
+console.log(myIndex.locale);</pre>
+
+<h3 id="Value">Value</h3>
+
+<p>A {{domxref("DOMString")}}.</p>
+
+<h2 id="Example">Example</h2>
+
+<p>In the following example we open a transaction and an object store, then get the index <code>lName</code> from a simple contacts database. We then open a basic cursor on the index using {{domxref("IDBIndex.openCursor")}} — this works the same as opening a cursor directly on an <code>ObjectStore</code> using {{domxref("IDBObjectStore.openCursor")}} except that the returned records are sorted based on the index, not the primary key.</p>
+
+<p>The <code>locale</code> value is logged to the console.</p>
+
+<pre class="brush:js">function displayDataByIndex() {
+  tableEntry.innerHTML = '';
+  var transaction = db.transaction(['contactsList'], 'readonly');
+  var objectStore = transaction.objectStore('contactsList');
+
+  var myIndex = objectStore.index('lName');
+  console.log(myIndex.locale);
+
+  myIndex.openCursor().onsuccess = function(event) {
+    var cursor = event.target.result;
+    if(cursor) {
+      var tableRow = document.createElement('tr');
+      tableRow.innerHTML =   '&lt;td&gt;' + cursor.value.id + '&lt;/td&gt;'
+                           + '&lt;td&gt;' + cursor.value.lName + '&lt;/td&gt;'
+                           + '&lt;td&gt;' + cursor.value.fName + '&lt;/td&gt;'
+                           + '&lt;td&gt;' + cursor.value.jTitle + '&lt;/td&gt;'
+                           + '&lt;td&gt;' + cursor.value.company + '&lt;/td&gt;'
+                           + '&lt;td&gt;' + cursor.value.eMail + '&lt;/td&gt;'
+                           + '&lt;td&gt;' + cursor.value.phone + '&lt;/td&gt;'
+                           + '&lt;td&gt;' + cursor.value.age + '&lt;/td&gt;';
+      tableEntry.appendChild(tableRow);
+
+      cursor.continue();
+    } else {
+      console.log('Entries all displayed.');
+    }
+  };
+};</pre>
+
+<h2 id="Specification">Specification</h2>
+
+<p>Not currently part of any specification.</p>
+
+<h2 id="Browser_compatibility">Browser compatibility</h2>
+
+<div>
+
+
+<p>{{Compat("api.IDBIndex.locale")}}</p>
+</div>
+
+<h2 id="See_also">See also</h2>
+
+<ul>
+ <li><a href="/en-US/docs/Web/API/IndexedDB_API/Using_IndexedDB">Using IndexedDB</a></li>
+ <li>Starting transactions: {{domxref("IDBDatabase")}}</li>
+ <li>Using transactions: {{domxref("IDBTransaction")}}</li>
+ <li>Setting a range of keys: {{domxref("IDBKeyRange")}}</li>
+ <li>Retrieving and making changes to your data: {{domxref("IDBObjectStore")}}</li>
+ <li>Using cursors: {{domxref("IDBCursor")}}</li>
+ <li>Reference example: <a class="external" href="https://github.com/mdn/to-do-notifications/tree/gh-pages">To-do Notifications</a> (<a class="external" href="http://mdn.github.io/to-do-notifications/">view example live</a>.)</li>
+</ul>