≡ cookies API
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cookies API
Use the browser.cookies API to query and modify cookies, and to be notified when they change.
Permissions
cookies
Note
The permission cookies is required to use messenger.cookies.*.
Functions
get(details)
Retrieves information about a single cookie. If more than one cookie of the same name exists for the given URL, the one with the longest path will be returned. For cookies with the same path length, the cookie with the earliest creation time will be returned.
Parameters
details
(object)
Details to identify the cookie being retrieved.
name
(string)
The name of the cookie to retrieve.
url
(string)
The URL with which the cookie to retrieve is associated. This argument may be a full URL, in which case any data following the URL path (e.g. the query string) is simply ignored. If host permissions for this URL are not specified in the manifest file, the API call will fail.
[firstPartyDomain]
(string, optional)
The first-party domain which the cookie to retrieve is associated. This attribute is required if First-Party Isolation is enabled.
The storage partition, if the cookie is part of partitioned storage. By default, only non-partitioned cookies are returned.
[storeId]
(string, optional)
The ID of the cookie store in which to look for the cookie. By default, the current execution context’s cookie store will be used.
Return type (Promise)
Contains details about the cookie. This parameter is null if no such cookie was found.
Required permissions
cookies
getAll(details)
Retrieves all cookies from a single cookie store that match the given information. The cookies returned will be sorted, with those with the longest path first. If multiple cookies have the same path length, those with the earliest creation time will be first.
Parameters
details
(object)
Information to filter the cookies being retrieved.
[domain]
(string, optional)
Restricts the retrieved cookies to those whose domains match or are subdomains of this one.
[firstPartyDomain]
(string, optional)
Restricts the retrieved cookies to those whose first-party domains match this one. This attribute is required if First-Party Isolation is enabled. To not filter by a specific first-party domain, use null or undefined.
[name]
(string, optional)
Filters the cookies by name.
Selects a specific storage partition to look up cookies. Defaults to null, in which case only non-partitioned cookies are retrieved. If an object iis passed, partitioned cookies are also included, and filtered based on the keys present in the given PartitionKey description. An empty object ({}) returns all cookies (partitioned + unpartitioned), a non-empty object (e.g. {topLevelSite: ‘…’}) only returns cookies whose partition match all given attributes.
[path]
(string, optional)
Restricts the retrieved cookies to those whose path exactly matches this string.
[secure]
(boolean, optional)
Filters the cookies by their Secure property.
[session]
(boolean, optional)
Filters out session vs. persistent cookies.
[storeId]
(string, optional)
The cookie store to retrieve cookies from. If omitted, the current execution context’s cookie store will be used.
[url]
(string, optional)
Restricts the retrieved cookies to those that would match the given URL.
Return type (Promise)
array of Cookie
All the existing, unexpired cookies that match the given cookie info.
Required permissions
cookies
getAllCookieStores()
Lists all existing cookie stores.
Return type (Promise)
array of CookieStore
All the existing cookie stores.
Required permissions
cookies
remove(details)
Deletes a cookie by name.
Parameters
details
(object)
Information to identify the cookie to remove.
name
(string)
The name of the cookie to remove.
url
(string)
The URL associated with the cookie. If host permissions for this URL are not specified in the manifest file, the API call will fail.
[firstPartyDomain]
(string, optional)
The first-party domain associated with the cookie. This attribute is required if First-Party Isolation is enabled.
The storage partition, if the cookie is part of partitioned storage. By default, non-partitioned storage is used.
[storeId]
(string, optional)
The ID of the cookie store to look in for the cookie. If unspecified, the cookie is looked for by default in the current execution context’s cookie store.
Return type (Promise)
object
Contains details about the cookie that’s been removed. If removal failed for any reason, this will be “null”, and lastError will be set.
firstPartyDomain
(string)
The first-party domain associated with the cookie that’s been removed.
name
(string)
The name of the cookie that’s been removed.
storeId
(string)
The ID of the cookie store from which the cookie was removed.
url
(string)
The URL associated with the cookie that’s been removed.
The storage partition, if the cookie is part of partitioned storage. null if not partitioned.
Required permissions
cookies
set(details)
Sets a cookie with the given cookie data; may overwrite equivalent cookies if they exist.
Parameters
details
(object)
Details about the cookie being set.
url
(string)
The request-URI to associate with the setting of the cookie. This value can affect the default domain and path values of the created cookie. If host permissions for this URL are not specified in the manifest file, the API call will fail.
[domain]
(string, optional)
The domain of the cookie. If omitted, the cookie becomes a host-only cookie.
[expirationDate]
(number, optional)
The expiration date of the cookie as the number of seconds since the UNIX epoch. If omitted, the cookie becomes a session cookie.
[firstPartyDomain]
(string, optional)
The first-party domain of the cookie. This attribute is required if First-Party Isolation is enabled.
[httpOnly]
(boolean, optional)
Whether the cookie should be marked as HttpOnly. Defaults to false.
[name]
(string, optional)
The name of the cookie. Empty by default if omitted.
The storage partition, if the cookie is part of partitioned storage. By default, non-partitioned storage is used.
[path]
(string, optional)
The path of the cookie. Defaults to the path portion of the url parameter.
The cookie’s same-site status.
[secure]
(boolean, optional)
Whether the cookie should be marked as Secure. Defaults to false.
[storeId]
(string, optional)
The ID of the cookie store in which to set the cookie. By default, the cookie is set in the current execution context’s cookie store.
[value]
(string, optional)
The value of the cookie. Empty by default if omitted.
Return type (Promise)
Required permissions
cookies
Events
onChanged
Fired when a cookie is set or removed. As a special case, note that updating a cookie’s properties is implemented as a two step process: the cookie to be updated is first removed entirely, generating a notification with “cause” of “overwrite” . Afterwards, a new cookie is written with the updated values, generating a second notification with “cause” “explicit”.
Parameters for onChanged.addListener(listener)
listener(changeInfo)
A function that will be called when this event occurs.
Parameters passed to the listener function
changeInfo
(object)
The underlying reason behind the cookie’s change.
Information about the cookie that was set or removed.
removed
(boolean)
True if a cookie was removed.
Required permissions
cookies
Types
Cookie
Represents information about an HTTP cookie.
object
domain
(string)
The domain of the cookie (e.g. “www.google.com”, “example.com”).
firstPartyDomain
(string)
The first-party domain of the cookie.
hostOnly
(boolean)
True if the cookie is a host-only cookie (i.e. a request’s host must exactly match the domain of the cookie).
httpOnly
(boolean)
True if the cookie is marked as HttpOnly (i.e. the cookie is inaccessible to client-side scripts).
name
(string)
The name of the cookie.
path
(string)
The path of the cookie.
The cookie’s same-site status (i.e. whether the cookie is sent with cross-site requests).
secure
(boolean)
True if the cookie is marked as Secure (i.e. its scope is limited to secure channels, typically HTTPS).
session
(boolean)
True if the cookie is a session cookie, as opposed to a persistent cookie with an expiration date.
storeId
(string)
The ID of the cookie store containing this cookie, as provided in getAllCookieStores().
value
(string)
The value of the cookie.
[expirationDate]
(number, optional)
The expiration date of the cookie as the number of seconds since the UNIX epoch. Not provided for session cookies.
The cookie’s storage partition, if any. null if not partitioned.
CookieStore
Represents a cookie store in the browser. An incognito mode window, for instance, uses a separate cookie store from a non-incognito window.
object
id
(string)
The unique identifier for the cookie store.
incognito
(boolean)
Indicates if this is an incognito cookie store
tabIds
(array of integer)
Identifiers of all the browser tabs that share this cookie store.
OnChangedCause
The underlying reason behind the cookie’s change. If a cookie was inserted, or removed via an explicit call to remove(details), “cause” will be “explicit”. If a cookie was automatically removed due to expiry, “cause” will be “expired”. If a cookie was removed due to being overwritten with an already-expired expiration date, “cause” will be set to “expired_overwrite”. If a cookie was automatically removed due to garbage collection, “cause” will be “evicted”. If a cookie was automatically removed due to a “set” call that overwrote it, “cause” will be “overwrite”. Plan your response accordingly.
string
Supported values:
evicted
expired
explicit
expired_overwrite
overwrite
PartitionKey
The description of the storage partition of a cookie. This object may be omitted (null) if a cookie is not partitioned.
object
[topLevelSite]
(string, optional)
The first-party URL of the cookie, if the cookie is in storage partitioned by the top-level site.
SameSiteStatus
A cookie’s ‘SameSite’ state (https://tools.ietf.org/html/draft-west-first-party-cookies). ‘no_restriction’ corresponds to a cookie set without a ‘SameSite’ attribute, ‘lax’ to ‘SameSite=Lax’, and ‘strict’ to ‘SameSite=Strict’.
string
Supported values:
no_restriction
lax
strict