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paramName
( optional enumerated Type array of paramType )
Undocumented.
Description of this parameter from the json schema.
This parameter was added in version . You must omit this parameter in earlier versions, and you may omit it in any version. If you require this parameter, the manifest key minimum_chrome_version can ensure that your extension won't be run in an earlier browser version.
Parameters
  1. Properties
    1. propertyName
  2. Methods
    1. methodName
  3. Events
    1. eventName
  4. Types
    1. id

Google Chrome Extensions (Labs)

chrome.experimental.storage

For information on how to use experimental APIs, see the chrome.experimental.* APIs page.

API reference: chrome.experimental.storage

Properties

sync

chrome.experimental.storage.sync
sync
( StorageNamespace array of paramType )
Items under the "sync" namespace are synced using Chrome Sync.
This parameter was added in version . You must omit this parameter in earlier versions, and you may omit it in any version. If you require this parameter, the manifest key minimum_chrome_version can ensure that your extension won't be run in an earlier browser version.

local

chrome.experimental.storage.local
local
( StorageNamespace array of paramType )
Items under the "local" namespace are local to each machine.
This parameter was added in version . You must omit this parameter in earlier versions, and you may omit it in any version. If you require this parameter, the manifest key minimum_chrome_version can ensure that your extension won't be run in an earlier browser version.

Events

onChanged

chrome.experimental.storage.onChanged.addListener(function(object changes, string namespace) {...});

Fired when one or more items change.

Listener parameters

changes
( Type array of object )
Object mapping each key that changed to its corresponding StorageChange for that item.
This parameter was added in version . You must omit this parameter in earlier versions, and you may omit it in any version. If you require this parameter, the manifest key minimum_chrome_version can ensure that your extension won't be run in an earlier browser version.
namespace
( Type array of string )
The namespace ("sync" or "local") of the storage area the changes are for.
This parameter was added in version . You must omit this parameter in earlier versions, and you may omit it in any version. If you require this parameter, the manifest key minimum_chrome_version can ensure that your extension won't be run in an earlier browser version.

Extra parameters to addListener

Listener returns

Types

StorageChange

paramName
( Type array of object )
Undocumented.
Description of this parameter from the json schema.
This parameter was added in version . You must omit this parameter in earlier versions, and you may omit it in any version. If you require this parameter, the manifest key minimum_chrome_version can ensure that your extension won't be run in an earlier browser version.
oldValue
( optional Type array of any )
The old value of the item, if there was an old value.
This parameter was added in version . You must omit this parameter in earlier versions, and you may omit it in any version. If you require this parameter, the manifest key minimum_chrome_version can ensure that your extension won't be run in an earlier browser version.
newValue
( optional Type array of any )
The new value of the item, if there is a new value.
This parameter was added in version . You must omit this parameter in earlier versions, and you may omit it in any version. If you require this parameter, the manifest key minimum_chrome_version can ensure that your extension won't be run in an earlier browser version.

StorageNamespace

paramName
( Type array of object )
Undocumented.
Description of this parameter from the json schema.
This parameter was added in version . You must omit this parameter in earlier versions, and you may omit it in any version. If you require this parameter, the manifest key minimum_chrome_version can ensure that your extension won't be run in an earlier browser version.

Methods of StorageNamespace

clear

void storageNamespace.clear(, function callback)

Removes all items from storage.

Parameters

callback
( optional Type array of function )
Callback on success, or on failure (in which case lastError will be set).
This parameter was added in version . You must omit this parameter in earlier versions, and you may omit it in any version. If you require this parameter, the manifest key minimum_chrome_version can ensure that your extension won't be run in an earlier browser version.

Returns

Callback function

The callback parameter should specify a function that looks like this:

If you specify the callback parameter, it should specify a function that looks like this: 

function() {...};

This function was added in version . If you require this function, the manifest key minimum_chrome_version can ensure that your extension won't be run in an earlier browser version.

get

void storageNamespace.get(, string or array of string or object keys, function callback)

Gets one or more items from storage.

Parameters

keys
( optional Type array of string or array of string or object )
A single key to get, list of keys to get, or a dictionary specifying default values (see description of the object). An empty list or object will return an empty result object. Pass in null or undefined to get the entire contents of storage; this should only be used for debugging.
This parameter was added in version . You must omit this parameter in earlier versions, and you may omit it in any version. If you require this parameter, the manifest key minimum_chrome_version can ensure that your extension won't be run in an earlier browser version.
callback
( Type array of function )
Callback with storage items, or on failure (in which case lastError will be set).
This parameter was added in version . You must omit this parameter in earlier versions, and you may omit it in any version. If you require this parameter, the manifest key minimum_chrome_version can ensure that your extension won't be run in an earlier browser version.

Returns

Callback function

The callback parameter should specify a function that looks like this:

If you specify the callback parameter, it should specify a function that looks like this: 

function(object items) {...};
items
( Type array of object )
Object with items in their key-value mappings.
This parameter was added in version . You must omit this parameter in earlier versions, and you may omit it in any version. If you require this parameter, the manifest key minimum_chrome_version can ensure that your extension won't be run in an earlier browser version.

This function was added in version . If you require this function, the manifest key minimum_chrome_version can ensure that your extension won't be run in an earlier browser version.

remove

void storageNamespace.remove(, string or array of string keys, function callback)

Removes one or more items from storage.

Parameters

keys
( Type array of string or array of string )
A single key or a list of keys for items to remove.
This parameter was added in version . You must omit this parameter in earlier versions, and you may omit it in any version. If you require this parameter, the manifest key minimum_chrome_version can ensure that your extension won't be run in an earlier browser version.
callback
( optional Type array of function )
Callback on success, or on failure (in which case lastError will be set).
This parameter was added in version . You must omit this parameter in earlier versions, and you may omit it in any version. If you require this parameter, the manifest key minimum_chrome_version can ensure that your extension won't be run in an earlier browser version.

Returns

Callback function

The callback parameter should specify a function that looks like this:

If you specify the callback parameter, it should specify a function that looks like this: 

function() {...};

This function was added in version . If you require this function, the manifest key minimum_chrome_version can ensure that your extension won't be run in an earlier browser version.

set

void storageNamespace.set(, object items, function callback)

Sets multiple items.

Parameters

items
( Type array of object )
Object specifying items to augment storage with. Values that cannot be serialized (functions, etc) will be ignored.
This parameter was added in version . You must omit this parameter in earlier versions, and you may omit it in any version. If you require this parameter, the manifest key minimum_chrome_version can ensure that your extension won't be run in an earlier browser version.
callback
( optional Type array of function )
Callback on success, or on failure (in which case lastError will be set).
This parameter was added in version . You must omit this parameter in earlier versions, and you may omit it in any version. If you require this parameter, the manifest key minimum_chrome_version can ensure that your extension won't be run in an earlier browser version.

Returns

Callback function

The callback parameter should specify a function that looks like this:

If you specify the callback parameter, it should specify a function that looks like this: 

function() {...};

This function was added in version . If you require this function, the manifest key minimum_chrome_version can ensure that your extension won't be run in an earlier browser version.