Baseline Widely available
Secure context: This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.
Note: This feature is available in Web Workers.
The persisted()
method of the StorageManager
interface returns a Promise
that resolves to true
if your site's storage bucket is persistent.
None.
Return valueA Promise
that resolves to a Boolean
.
TypeError
Thrown if obtaining a local storage shelf failed. For example, if the current origin is an opaque origin or if the user has disabled storage.
if (navigator.storage && navigator.storage.persist) {
navigator.storage.persisted().then((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 Browser compatibility
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HTML:
3.2
| Encoding:
UTF-8
| Version:
0.7.4