This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The isAutoLocale read-only property of the IDBIndex interface returns a Boolean indicating whether the index had a locale value of auto specified upon its creation (see createIndex()'s optionalParameters.)
var myIndex = objectStore.index('index');
console.log(myIndex.isAutoLocale); A Boolean.
In the following example we open a transaction and an object store, then get the index lName from a simple contacts database. We then open a basic cursor on the index using IDBIndex.openCursor — this works the same as opening a cursor directly on an ObjectStore using IDBObjectStore.openCursor except that the returned records are sorted based on the index, not the primary key.
The isAutoLocale value is logged to the console.
function displayDataByIndex() {
tableEntry.innerHTML = '';
var transaction = db.transaction(['contactsList'], 'readonly');
var objectStore = transaction.objectStore('contactsList');
var myIndex = objectStore.index('lName');
console.log(myIndex.isAutoLocale);
myIndex.openCursor().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.');
}
};
}; Not currently part of any specification.
| Desktop | ||||||
|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | |
| Basic support | No | No | 43 | No | No | No |
| Mobile | |||||||
|---|---|---|---|---|---|---|---|
| Android webview | Chrome for Android | Edge Mobile | Firefox for Android | Opera for Android | iOS Safari | Samsung Internet | |
| Basic support | No | No | No | 43 | No | No | No |
IDBDatabase
IDBTransaction
IDBKeyRange
IDBObjectStore
IDBCursor
© 2005–2018 Mozilla Developer Network and individual contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/IDBIndex/isAutoLocale