Syntax

window["optimizely"].push(cookieExpiration);

Parameters

Parameter and Type	Child Attribute	Description
cookieExpiration CookieExpirationObject	N/A	An object with the `type` field set to `cookieExpiration`. The other fields are the function arguments. Required.
type object	Child attribute of type CookieDomainObject	The argument indicating that you are using the cookieExpiration function. Required.
cookieExpirationDays integer	Child attribute of type CookieDomainObject	The cookie expiration defined in days.

Example Call

window["optimizely"].push({
  "type": "cookieExpiration",
  "cookieExpirationDays": 365
});

Description

Specify the number of days before the Optimizely Web Experimentation visitor cookies will be set to expire. You must call "setCookieExpiration" prior to loading the Optimizely Web Experimentation snippet. The minimum number of days that can be set is 90 (approximately three months). For more information on how Optimizely Web Experimentation uses cookies, read our article on Cookies and localStorage in the Optimizely Web Experimentation snippet.

📘
Note
Some Optimizely Web Experimentation cookies are reset every time a visitor comes to the site, which means the expiration period set with this API call is used each time the cookie is set. You can also use the API to enable or disable the extend cookie lifetime function.