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storage.StorageArea

StorageArea is an object representing a storage area.

Values of this type are objects.

storage.StorageArea.get(): Retrieves one or more items from the storage area.
storage.StorageArea.getBytesInUse(): Gets the amount of storage space (in bytes) used one or more items being stored in the storage area.
storage.StorageArea.set(): Stores one or more items in the storage area. If an item already exists, its value will be updated.
storage.StorageArea.setAccessLevel(): Sets the access level for the storage area.
storage.StorageArea.remove(): Removes one or more items from the storage area.
storage.StorageArea.clear(): Removes all items from the storage area.

storage.StorageArea.onChanged: Fires when one or more items in the storage area change.

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	WebView Android	Chrome Android	Firefox for Android	Opera Android	Safari on IOS	Samsung Internet
`StorageArea`	Yes	14	45	?	Yes	14	?	?	48	?	15	?
`clear`	Yes	14	45	?	33	14	?	?	48	?	15	?
`get`	Yes	14	45	?	33	14	?	?	48	?	15	?
`getBytesInUse`	Yes	14	78 Only supported by the `sync` storage area.	?	33	14	?	?	No	?	15	?
`onChanged`	73	Yes	101	?	Yes	14	?	?	101	?	15	?
`remove`	Yes	14	45	?	33	14	?	?	48	?	15	?
`set`	Yes	14 storage is limited to 1MB per value.	45	?	33	14	?	?	48	?	15	?
`setAccessLevel`	96 Only supported for the session storage area.	96 Only supported for the session storage area.	No	?	82 Only supported for the session storage area.	No	?	?	No	?	No	?

Note: This API is based on Chromium's chrome.storage API. This documentation is derived from storage.json in the Chromium code.

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https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/storage/StorageArea