Permissions API for the Web | Blog | Chrome for Developers

If you've worked with the Geolocation API before, chances are you've wanted to check if you had permission to use Geolocation without causing a prompt. This simply wasn't possible. You had to request the current position and this would indicate the permission state or cause a prompt to be shown to the user. Not all APIs work this way. The Notifications API has its own way of allowing you to check

[grapswiz]

permission置き場

[efcl]

パーミッションを確認するAPI。 `navigator.permissions`について