Answer:
creates a cookie with a name of “username” and a value of “mike2009”
Step-by-step explanation:
This javascript code creates a cookie with the name "username" and it's value is "mike2009".This cookie expires after 1 year.Mentioned in the max-age function.Since max-age function takes arguments in seconds so the it sums up to 1 year.It will be deleted after one year.