关于cookie:js清除全部cookie

试了很多网上写的革除cookie的代码，逻辑是将cookie有效期设为过期工夫，然而没有成果，最初发现还要再加个max-age=0

const clearCookie = () => {  var keys = document.cookie.match(/[^ =;]+(?==)/g);  if (keys) {    for (var i = keys.length; i--; ) {      document.cookie =        keys[i] +        "=0;expires=" +        new Date(0).toUTCString() +        ";max-age=0";    }  }};