destroy cookie with javascript code example

Example 1: javascript delete cookie

function deleteCookie(name) {
  document.cookie = name + '=; expires=Thu, 01 Jan 1970 00:00:01 GMT;';
}

Example 2: 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"