Cookies: Checking if a cookie exists

Here’s how you can check if a cookie exists:

if (
  document.cookie.split(';').filter(item => {
    return item.includes('name=')
  }).length
) {
  //name exists
}

0:	Introduction
1:	Setting cookies
2:	Setting a cookie expiration date
3:	Setting a cookie path
4:	Setting a cookie domain
5:	Cookies security
6:	Updating a cookie
7:	Deleting a cookie
8:	Accessing the value of a cookie
9:	▶︎ Checking if a cookie exists
10:	Inspecting cookies