CookieStore.set()

The set() method of the CookieStore interface sets a cookie with the given name and value or options object. (See below.)

This method requires one of the following:

name

A USVString with the name of the cookie.

value

A USVString with the value of the cookie.

options

An object containing:

name

A USVString with the name of a cookie.

value

A USVString with the value of the cookie.

expiresOptional

A DOMTimeStamp containing the expiration date of the cookie.

domainOptional

A USVString containing the domain of the cookie.

pathOptional

A USVString containing the path of the cookie.

sameSiteOptional

One of the following SameSite values:

"strict"

Cookies will only be sent in a first-party context and not be sent along with requests initiated by third party websites.

"lax"

Cookies are not sent on normal cross-site subrequests (for example to load images or frames into a third party site), but are sent when a user is navigating to the origin site (i.e. when following a link).

"none"

Cookies will be sent in all contexts.

Note: For more information on SameSite cookies see SameSite cookies explained.

A Promise that resolves with Undefined when setting the cookie completes.

TypeError

Thrown if setting the cookie with the given values fails.

DOMException SecurityError

Thrown if the origin does not serialize to a URL.

The following example sets a cookie by passing an object with name, value, expires, and domain.

const day = 24 * 60 * 60 * 1000;
cookieStore.set({
  name: "cookie1",
  value: "cookie1-value",
  expires: Date.now() + day,
  domain: "example.com"
});