Delete a Cookie using Javascript

JavaScript can create, read, and delete cookies with the document.cookie property.

Syntax:

document.cookie = "key1 = value1; key2 = value2; expires = date";

document.cookie = "key1 = value1; key2 = value2; expires = date";

Where:
expires: is an optional attribute that specifies the date of cookie expiration.

Example:

document.cookie = "username=jai;

document.cookie = "username=jai;

We don’t have to specify a cookie value when we want to delete a cookie. We have to set the expiration parameter to a passed date.

Delete a cookie using javascript

document.cookie = "username=; expires=passedDate";

document.cookie = "username=; expires=passedDate";