What are cookies
A cookie is a small piece of data that a website asks your browser to store on your
computer or mobile device. The cookie allows the website to "remember" your actions or
preferences over time.
Most browsers support cookies, but users can set their browsers to decline them and
can delete them whenever they like.
remember users' custom preferences
help users complete tasks without having to re-enter information when browsing from
one page to another or when visiting the site later.
Cookies can also be used for online behavioural target advertising and to show adverts
relevant to something that the user searched for in the past.
How are they used?
The web server supplying the webpage can store a cookie on the user's computer or
mobile device. An external web server that manages files included or referenced in the
webpage is also able to store cookies. All these cookies are called http header cookies.
Each time the user requests a new page, the web server can receive the values of the
cookies it previously set and return the page with content relating to these values.
an action accordingly.
What are the different types of cookies?
A cookie can be classified by its lifespan and the domain to which it belongs.
By lifespan, a cookie is either a session cookie which is erased when the user closes
the browser or persistent cookie which remains on the user's computer/device for a
pre-defined period of time.
© San Carlo Junior School 2020