persist method

JSPromise<JSBoolean> persist()

The persist() method of the StorageManager interface requests permission to use persistent storage, and returns a Promise that resolves to true if permission is granted and bucket mode is persistent, and false otherwise. The browser may or may not honor the request, depending on browser-specific rules. (For more details, see the guide to Storage quotas and eviction criteria.)

Note: This method is not available in Web Workers, though the StorageManager interface is.

Implementation

external JSPromise<JSBoolean> persist();