remove cookies in javascript code example

Example 1: how to delete a cookie in js

//set the vvalue to EMPTY, and the date to an already PASSED one.
document.cookie = "cookiename= ; expires = Thu, 01 Jan 1970 00:00:00 GMT"

Example 2: delete cookies by domain javascript

document.cookie = 'my_cookie=; path=/; domain=.example.com; expires=' + new Date(0).toUTCString();