StorageManager.persisted()
Secure context: This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.
Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The persisted() method of the
StorageManager interface returns a Promise that resolves
to true if box mode is persistent for your site's storage.
Syntax
navigator.storage.persisted().then(function(persistent) { /* ... */ })
Parameters
None.
Returns
Example
if (navigator.storage && navigator.storage.persist)
navigator.storage.persisted().then(function(persistent) {
if (persistent)
console.log("Storage will not be cleared except by explicit user action");
else
console.log("Storage may be cleared by the UA under storage pressure.");
});
Specifications
| Specification |
|---|
| Storage Standard # dom-storagemanager-persisted |
Browser compatibility
BCD tables only load in the browser