revision:
The hasStorageAccess() method of the Document interface returns a Promise that resolves with a boolean value indicating whether the document has access to unpartitioned cookies.
This method is part of the Storage Access API.
hasStorageAccess()
Parameters: none
<script> document.hasStorageAccess().then((hasAccess) => { if (hasAccess) { // storage access has been granted already. } else { // storage access hasn't been granted already; // you may want to call requestStorageAccess(). } }); </script>