how to delete a cookie in js

JavaScript
function deleteCookie(name) {
  document.cookie = name + '=; expires=Thu, 01 Jan 1970 00:00:01 GMT;';
}//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"var removing = browser.cookies.remove(
  details               // object
)
Source

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